Percentages
A shirt costs $60, but is 25% off. How much is the shirt?
A car travels 120km in 2 hours. How fast is the car going?
60km/hr
Simplify 12:20
3:5
A right angle triangle with the short sides 3cm and 5cm.
5.83
A jacket is on sale for $84 after a 30% discount.
What was the original price?
$120
143.91
5 apples cost $4. How much does one apple cost?
80c
The ratio of boys to girls is 5 : 7.
There are 35 girls.
How many boys are there?
25
The hypotenuse is 13 cm.
One side is 5 cm.
Find the other side. (to the nearest cm)
12cm
Three friends share $180 in the ratio:
2 : 3 : 5
How much does each person receive?
2 parts = $36
3 parts = $54
5 parts = $90
A game originally cost $200. It's price was raised by 15%, then discounted by 20%. How much does it cost?
184
A cyclist rides 36 km in 1.5 hours.
Find the average speed.
24 km/h
A recipe needs flour and sugar in the ratio 3 : 2.
If you use 18 cups of flour, how much sugar is needed?
12
Find the short side of a right angle triangle with a hypotenuse of 16cm and a side of 10cm.
12.5cm (1dp)
The ratio of boys to girls is:
5 : 7
There are 28 girls.
How many students are there altogether?
48
My pocket money was $15/week when I was 13. Every year it increases by 25%. What is my pocket money amount when I turn 16 (to the nearest dollar).
$29/week
Shop A sells
8 cans for $7.20
Shop B sells
10 cans for $9.50
Which is the better buy?
Shop A
The ratio of red, blue and green marbles is
2 : 5 : 3
There are 40 marbles altogether.
How many blue marbles are there?
20
is a triangle with the sides 8cm, 6cm, and 10cm a right angle triangle?
Yes
Two runners complete a race.
Runner A:
Runner B:
Who is faster and by how much?
Runner A = 10 km/h
Runner B = 12 km/h
Runner B is faster by 2 km/h
I spent 8% of my money on a new cricket bat, which cost $120. How much money did I have before my purchase?
$1500
A tap fills 24 litres in 6 minutes.
At the same rate, how many litres will it fill in 20 minutes?
80 litres
8 ∶ 𝑥 = 56 ∶ 63
9
Do the numbers 5, 8, 10 form a Pythagorean triad?
Yes
A rectangular garden is 30 m long and 16 m wide.
A path goes diagonally across the garden.
The path is paved at $12 per metre.
There is a 25% discount on the total cost.
How much does the path cost?
$306