Ratio Basics
The ratio of cats to dogs in a shelter is 3:5. How many dogs are there if there are 9 cats?
15 dogs.
Complete the table for the ratio 2:3, 4:6, :, 10:15
6:9 or 8:12
A bus travels 180 miles in 3 hours. What is the unit rate?
60 miles per hour.
25% of 200 is what number?
50
A TV show has 13 minutes of commercials and 47 minutes of show time. What is the ratio of commercials to show time?
13:47
True or False: The ratios 2:3 and 8:12 are equivalent.
True
Plotting ratios on a coordinate plane, what is the point that represents 16 size-8½ shoes out of 100 total?
(100, 16)
Mallory buys cereal: 11 oz for $2.75 or 22 oz for $4.40. Which is the better buy?
The 22 oz box (20¢ per ounce vs. 25¢ per ounce)
Jasmine finished 16 questions, which was 20% of her test. How many total questions were on the test?
80 questions
A car drives 60 minutes at 40 mph and then 30 minutes at 70 mph. How far did it travel?
65 miles
Write a ratio comparing 12 girls to 20 total students.
12:20 or 3:5 (girls to total)
Javier earns $700 for 3 web pages. How much for 6 pages?
$1,400
Angela swims 1,700 meters in 40 minutes. What is her unit rate in meters per minute?
42.5 meters per minute
Marissa scored 85% and got 51 correct. How many total questions were there?
60 questions
Lucas read 31% of his 681-page book. What page will he read next?
.
Page 212
A shoe store orders 8 pairs of size 8½ shoes for every 50 pairs of shoes. What is the ratio of size 8½ shoes to total shoes?
8:50 or 4:25
If the ratio of boys to girls at a college is 3:7, and there are 200 more girls than boys, how many boys are there?
300 boys
Julie earns $36 in 3 hours. What is her hourly rate?
$12 per hour
A shirt costs $50 and is on sale for 20% off. What is the sale price?
$40.
A volleyball court is 26 ft × 52 ft × 1 ft deep with sand. How many cubic feet of sand are needed?
1,352 cubic feet
The ratio of girls to boys in a school is 4:5. If there are 180 students in total, how many girls are there?
80 girls.
A punch recipe calls for 2 cups of juice for every 5 cups of soda. If you want to make 49 cups of punch, how many cups of juice and soda are needed?
14 cups juice, 35 cups soda
A printing press prints 1,200 pages in 30 minutes. At this rate, how many pages will it print in 2 hours?
4,800 pages.
A store increases the price of a jacket by 25%. The new price is $75. What was the original price?
$60.
A recipe uses a ratio of 3 cups flour to 2 cups sugar. If you only have 9 cups of flour, how much sugar is needed to keep the ratio the same?
6 cups sugar.