Quiz 1 Review
Unit conversions
Uses of Percentages
Abuses of percentages
Geometry
100
1. Tomatoes are on sale. They can be purchased individually at 7 for $7.35, or in packs of 4 for $4.24. Is it better buy to purchase tomatoes individually or in packs? (Use correct units and round to the nearest penny if necessary.)
Q1.
Better to buy 7 for $1.05/tomato, unless you don't like tomatoes.
(Option 2 is $1.06/tomato)
100
How many seconds in 1 hour?
3600 seconds are in 1 hour.
100
80% of girls who are enrolled at Weber State like Taylor Swift. If there are 45,000 women at Weber State, how many of them like Taylor Swift? How many do not?
Q14.
36000 women at Weber State like Taylor Swift. 9000 do not.
100
Can you add or subtract percentages?
No!
A decrease of 10% then an increase of 10% is not equal.
100
Base and height are always (blank) to each other.
Perpendicular
Look for a 90 degree angle
200
Cooking oil is sold in two sizes. The first, a small can with 4L of oil at $2.20. The second, a large can of 6L for $3.24. Which is the better deal?
Option 2 for $0.54/L
(Option 1 had $0.55/L)
200
Your car averages 45 miles per gallon and the tank holds 20 gallons of gas. You have ¾ of a tank of gas. How many miles can you travel until your tank is empty? How much will it cost to fill the tank full.
Q12.
675 miles and $21.45 to fill fully
200
You want to buy a shirt for $50.99 and your total rings up as $54.69. This is due to Utah's sales tax. What percentage is this sales tax?
7.25% (as of 2026)
200
What is the rate of a 26.33% sale. (Percentage or decimal.)
73.01% or 0.7301
200
If your iPhone has a screen size (corner to corner) of 6 inches, and its 2.5 inches across, how tall is it? Use correct units and round to the nearest tenth.
Q7.
Approximately 5.5 inches.
Remember, area is in units squared (i.e. ft^2)
and volume is in units cubed (i.e. miles^3)
300
6.5
300
A leatherback sea turtle is walking across the beach at a speed of 410 feet per minute. What is the turtle’s speed in inches per second? Use correct units and round to the nearest tenth if necessary.
Q3.
82 in/sec
300
In 2021, a gallon of milk cost $3.55. In 2022, the cost for a gallon of milk was $4.09. What was the absolute change in price? What was the relative change in price for the gallon of milk?
Q8.
Absolute: +$0.54
(New Value - Original Value)
Relative: +15.2%
((New - Original)/Original) * 100
300
This month, there was 30% more rain than last month. The amount of rain this month was what percent of the amount of rain last month?
130%
Hint: (From what to what)
300
You are wallpapering your room. The door to your room and your two closet doors are each 7 feet by 4 feet. Your window is 6 feet by 4 feet. If the walls to your room are 15 feet long by 22 feet wide and 9 feet tall, how much wallpaper will you need? Round to the nearest square foot.
Q10a.
558 sq ft of wallpaper
400
Double Jeapordy!
Final Question
400
A knot is shorthand for 1 nautical mile per hour. (1 nautical mile=1.15 regular miles). Two people are stranded on an island 600 miles away. If the ship is traveling at 70 knots. How long will it take to reach the island (in hours)?
74.5 hours (about 3 days)
400
A pair of socks is on sale for $9.50. The socks were 10% off. What was the original price?
Q6.
$10.56
(Don't forget to round to the nearest penny)
400
During today’s basketball game, there was a 65% decrease in the number of drinks sold as compared to last week’s game. The number of drinks sold at today’s game was what percent of the number of drinks sold during last week’s game?
35%
400
A bird takes off from its nest and flies 33 miles North, then it flies 25 miles East. If it wanted to fly back to its nest, what is the shortest distance it could travel? Round to the nearest tenth of a mile.
Q13.
41.4 miles
500
16513.84
500
Drake's album was encased in 2,500 blocks of ice. Each block weighs 136 kilograms. 334 Kilojoules are required to melt 1 kilogram of ice. The sun warms up the ice at a rate of 5000 kilojoule per hour. How many years would it take to fully melt the ice?
2.63 years.
500
At a fancy Mexican restaurant, you order a meal that is $25.99. The sales tax is 5.77%, and you want to leave a tip of 18%. (Tips are paid post-tax.) What would your total cost of the meal be?
$32.44 (Base+tax+tip)
Other answers:
"My husband pays so, I don't know." -My wife.
"It's 'put it on my husband's card'. That's the price" - Also my wife.
500
If some amount were increased by 20%, by what percentage would the amount have to decrease to become the original value? Approximate to the nearest percent.
About 17%.
500
At Fernando's Pizza, you can buy a 16-inch pizza for $10.50 or you can buy 2 12-in pizzas for $5.50 each. Which option gives you a better deal?
The 2 12-inch pizzas. ($0.048/in^2 or 20.6 in^/$)
The 16 inch pizza only gives ($0.052/in^2 or 19.2 in^2/$)