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100
In the IGCSE exam how much is each section worth? 

A, B and C


Section A- 40

Section B- 30

Section C- 30

Total 100

100

Railtickets and Cheaptrains are two websites selling train tickets, 

Each of the websites adds a credit card charge and a booking fee to the tickets price.

Railtickets: Credit Card charge: 2.25% of the ticket price, Booking fee: 80 pence

Cheaptrain: Credit Card charge: 1.5% of the ticket price, Booking fee: 1.90 pounds

Nadia wants to buy a train ticket, The ticket price is 60 pounds on each website, but she's paying with her credit card.

Which will be cheaper?

Finding the price when buying £60 ticket from Railtickets

Finding 2.25% of £60 by using a multiplier of 0.0225

0.0225 × £60 = £1.35

Add on the booking fee of 80 pence

£1.35 + £0.80 = £2.15  of fees in total for Railtickets

Finding the price when buying £60 ticket from Cheaptrains

Finding 1.5% of £60 by using a multiplier of 0.015

0.015 × £60 = £0.90

Add on the booking fee of £1.90

£0.90 + £1.90 = £2.80  of fees in total for Cheaptrains

Comparing the two total fees

Both correct fees of £2.15 and £2.80 [1]

It will be cheaper to buy the ticket from Railtickets [1]

100

What is the largest organ in the human body?

The skin
100

Which economic principle states that as the price of a good or service increases, the quantity demanded decreases, and vice versa?

Law of demand

100

 Turn me on my side and I am everything. Cut me in half and I am nothing. What am I?



The Number 8

200

Spell this word which means a fictitious name used by an individual in place of their real name, often for the purpose of concealing their identity or for artistic or professional reasons. 

_________

Pseudonym 

"The famous author wrote under a pseudonym to maintain anonymity while experimenting with different genres."

200

In 2003, Jerry bought a house. In 2007 Jerry sold the house to Mia, and made 20% profit.

In 2021 Mia sold the house for $162,000. She had a loss of 10%.

How much did Jerry pay for the house in 2003?

Let the value of the house in 2003 be V2003, and so on for the other years

Jerry made a profit of 20% in 2007, so the value has increased by 20%, so we can write

V2007 = V2003 × 1.2

The house was then sold in 2012 and made a loss of 10%, so the value is now 90% of what it was bought for, so we can write

V2012 = (V2007) × 0.9

V2012 = (V2003 × 1.2) × 0.9

The house was sold for $162 000 in 2012, so we can fill in the value of V2012

162000 = (V2003 × 1.2) × 0.9

[1]

Divide both sides by 0.9

180000 = (V2003 × 1.2)

[1]

Divide both sides by 1.2


150000 = V2003

Jerry paid £150 000 in 2003 [1]



200

Balance the following chemical equation: Na + Cl₂ → NaCl.  


The balanced chemical equation for the reaction between sodium (Na) and chlorine gas (Cl₂) to form sodium chloride (NaCl) is:

2Na + Cl₂ → 2NaCl

200

 Explain the difference between a private limited company and a public limited company.

A private limited company (Ltd) is owned by shareholders but cannot offer shares to the public. A public limited company (Plc) can offer shares to the public and is listed on a stock exchange.

200

I can't be bought, but I can be stolen with a glance. I'm worthless to one, but priceless to two. What am I?

LOVE

300

What are the differences between ; and : ? Define both!

Sure, here's a shortened answer:


Semicolon (;): Used to join closely related independent clauses or separate items in a list when the items contain commas.

Colon (:): Introduces or emphasizes information that follows, often indicating a list or explanation.

300
In a competition, a price is won for every 2014 seconds. Work out an estimate for the number of prizes won in 24 hours. 


C

To find out how many prizes are won in 24 hours, first, let's calculate how many seconds are in 24 hours:

1 hour = 60 minutes

1 minute = 60 seconds

So, 1 hour = 60 * 60 = 3600 seconds

Therefore, 24 hours = 24 * 3600 = 86,400 seconds.

Now, we know that a prize is won every 2014 seconds.

Now, let's divide the total number of seconds in 24 hours by the time it takes to win one prize:

Number of prizes = Total seconds in 24 hours / Seconds per prize

                  = 86,400 / 2014

Calculating this:

Number of prizes ≈ 86,400 / 2014 ≈ 42.95

Since you can't win a fraction of a prize, we'll take the whole number part, which is 42.

So, an estimate for the number of prizes won in 24 hours is 42.

300

Give the formula for ammonium ion.

The chemical formula for the ammonium ion is \( NH_4^+ \). It consists of one nitrogen atom (N) bonded to four hydrogen atoms (H), and it carries a positive charge.

300

Who were the leaders of the Allied Powers during World War II?

The leaders of the Allied Powers during World War II were 

1.Franklin D. Roosevelt (United States)

2.Winston Churchill (United Kingdom) 

3.Joseph Stalin (Soviet Union).

300

 A father told his three sons he would die soon and he needed to decide which one of them to give his property to. He said, “Go to the market and buy something that is large enough to fill my bedroom, but small enough to fit in your pocket. From this, I will decide which of you is the wisest and worthy enough to inherit my land.” They all went to the market, and each came back with a different item. The father told his sons to come into his bedroom one at a time and try to fill up his bedroom with their item. The first son came in and put some pieces of cloth he bought and laid them across the room, but it barely covered the floor. The second son came in and laid some hay on the floor, but there was only enough to cover half the floor. The third son came in and showed his father what he bought. He wound up getting the property. What did the third son show his father? 


A box of matches. Whenever he lit a match, it filled the room with light.

400

List 3 purple cows each that can be used for narrative writing and non-fiction writing

Narrative:

Dialogue,Action scene, Setting, Onomatopoeia,short sentences,

Non-Fiction:

Rhetorical  question, shocking statement, Facts and statistics, Quotations

400

Danny bakes 420 cakes. He bakes only vanilla cake, banana cakes and lemon cakes and chocolate cakes.

2/7 of the cakes are vanilla cakes.

35% of the cakes banana cakes. The ratio of the number of lemon cakes to the number of chocolate cakes is 4:5. How many lemons cakes did Danny bake?

To find out how many lemon cakes Danny baked, let's break down the information given:


1. Vanilla cakes: \( \frac{2}{7} \) of 420 cakes

2. Banana cakes: 35% of 420 cakes

3. Lemon cakes: Ratio of lemon cakes to chocolate cakes is 4:5First, let's find out the number of vanilla cakes:

Number of vanilla cakes \(= \frac{2}{7} \times 420 = \frac{2}{7} \times 420 = 120\)

Now, let's find out the number of banana cakes:

Number of banana cakes \(= \frac{35}{100} \times 420 = 0.35 \times 420 = 147\)

Next, we'll use the ratio of lemon cakes to chocolate cakes, which is 4:5. This means the total parts of the ratio are 4 + 5 = 9 parts.

To find out the number of lemon cakes, we'll first find the value of 1 part:

1 part \(= \frac{420}{9} = 46.67\)

Now, since the ratio of lemon cakes to chocolate cakes is 4:5, and each part represents 46.67 cakes, we'll multiply 4 by the value of 1 part to find out the number of lemon cakes:

Number of lemon cakes \(= 4 \times 46.67 = 186.68\)

Danny can't make a fraction of a cake, so we round this down to the nearest whole number, which is 186.

So, Danny baked 186 lemon cakes.

400

a light emitting diode (LED) is a diode that emits light when there is a current in it. 

Draw a circuit diagram showing an LED, connected so that is it lit in a series with a batter and a fixed resistor.

In this diagram:

  • The battery is represented by the longer line (positive terminal) and the shorter line (negative terminal).
  • The LED (Light Emitting Diode) is represented by the arrow pointing away from the positive terminal of the battery, indicating the direction of current flow.
  • The resistor is represented by the zigzag line. It's important to include a resistor in series with the LED to limit the current flowing through the LED and prevent it from burning out.
400

Define the term "entrepreneurship" in the context of business studies.

Entrepreneurship is the process of identifying business opportunities and taking risks to create and run a successful business.

400

 My first is in chocolate but no in ham. My second is in cake and also in jam. My third at tea-time is easily found. Altogether, this is a friend who is often around. What is it?

Cat—”c” is the first letter in “chocolate,” “a” is the second letter in “cake” and “jam,” and “t” is the third letter in “tea-time.”

500

What is the term for a literary device in which a writer intentionally suggests two or more different, and often conflicting, meanings in a work of literature, often through the use of wordplay or ambiguity?

ie Sentence: "She's heating up the kitchen with her spicy cooking."  

Double entendre



500


Arjun and Greta each pay rent.
 In 2018, the ratio of the amount each paid in rent was Arjun:Greta=5:7
 In 2019, the ratio of the amount each paid in rent was Arjun:Greta= 9:13 
Arjun paid the same amount of rent in both 2018 and 2019.
Greta paid $290 more rent in 2019 than she did in 2018.
 Work out the amount Arjun paid in rent in 2019.



Answer :-


Let us assume that,

  • Arjun paid in 2018 = $ 5x
  • Gretal paid in 2018 = $ 7x
  • Arjun paid in 2019 = $ 9y
  • Gretal paid in 2019 = $ 13y .


given that,

→ 5x = 9y -------- Eqn.(1)

→ 7x + 290 = 13y

→ 13y - 7x = 290 ------ Eqn.(2)


putting value of x from Eqn.(1) in Eqn.(2),

→ 5x = 9y

→ x = (9y/5) .


so,

→ 13y - 7(9y/5) = 290

→ 13y - (63y/5) = 290

→ (65y - 63y) / 5 = 290

→ 2y = 290 * 5

→ y = $725 .


therefore,

→ Amount Arjun paid in rent in 2019 = 9y = 9 * 725 = $6525 (Ans.)

500

Give the definition of the term "respiration' and write a balanced symbol equation for respiration.for Aerobic respiration.

Respiration is the biochemical process by which cells break down organic molecules, such as glucose, to release energy in the form of ATP (adenosine triphosphate). This energy is utilized by cells for various biological processes, including growth, movement, and maintenance of cellular functions. Respiration typically involves the uptake of oxygen and the production of carbon dioxide as a waste product.


The balanced symbol equation for aerobic respiration, which occurs in the presence of oxygen, is as follows:


C6H12O6 (glucose) + 6O2 (oxygen) → 6CO2 (carbon dioxide) + 6H2O (water) + energy (in the form of ATP)


This equation represents the complete oxidation of glucose, where glucose is broken down in the presence of oxygen to produce carbon dioxide, water, and energy.

500
Explain the concept of supply and demand and how it affects prices in a market economy. What should countries do if a there is low demand (low monetary circulation) in a country? 



In a market economy, supply and demand determine prices. Low demand can be addressed by implementing fiscal and monetary policies, investing in infrastructure, and providing targeted assistance to affected industries or individuals. These measures aim to stimulate demand, boost economic activity, and promote growth.

500

A man is looking at a photograph of someone. His friend asks who it is. The man replies, “Brothers and sisters, I have none. But that man’s father is my father’s son.” Who was in the photograph?

His son

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