Ratios
A cookie recipe calls for 7 cups of flour for every 3 cups of milk. Write the ratio that represents the number of cups of flour compared to the number of cups of milk.
7:3
Ms. Amanda buys 6 pounds of strawberries for $12. What is the price per pound?
$2 per pound
A slow-moving robotic toy travels at a speed of 7,200 feet per hour. What is its speed in feet per second? (1 hour = 3,600 seconds) Use a Ratio Table with Feet and Seconds.
2 feet per second
At a book fair, 40% of students buy a book. Which representations of 40% are correct? Write all letters that apply.
A. 40, B. 40/100, C. 0.04, D. 0.4, E. 2/5
B, D, E
Lina runs 2 miles in 16 minutes. Ed runs 4 miles in 36 minutes. They both run at a constant rate. Who runs at a slower rate and why?
Ed runs at a slower rate, he runs 1 mile in 9 minutes. Lina runs 1 mile in 8 minutes.
Ms. Amanda has 2 pairs of white shoes, 4 pairs of purple shoes, 3 pairs of black shoes, and 1 pair of brown shoes. What is the ratio of the number of pairs of purple shoes to the total number of pairs of shoes?
4:10
Ms. Amanda runs 30 miles in 5 days. When the rate is expressed in miles per day, what is the unit rate?
6
A small drone flies at a steady speed of 2 miles per minute. What is its speed in feet per minute? (1 mile = 5,280 feet) Use a Ratio Table with Miles and Feet.
10,560 feet per minute
1. 20 is 25% of what number?
2. 60 is 30% of what number?
3. 12 is 5% of what number?
1. 80
2. 200
3. 240
A cyclist rides at a constant speed of 15 miles per hour. How many miles will they travel in 3 hours?
They will travel 45 miles.
A pizza recipe calls for 5 cups of tomato sauce for every 2 cups of cheese. How many cups of tomato sauce are used for every 1 cup of cheese?
5/2 (2.5) cups of tomato sauce
The price of 3 pounds of apples is $12. The price of 5 pounds of oranges is $15. The price of 2 pounds of bananas is $4. Which fruit has the greatest price per pound?
The apples have the greatest price pound. They cost $4 per pound.
21,120 feet per hour
If 280 students attended the book fair, how many students represent the 40% that bought a book?
112 students bought a book
If Ms. Amanda's unit rate for number of miles ran per day is 2, what does the unit rate mean?
The unit rate is the number of miles Ms. Amanda ran in 1 day.
A zoo has 4 polar bears and 24 penguins. The zoo gets more polar bears. Now, the ratio of the number of polar bears to the number of penguins is 5:6. What is the original ratio of the number of polar bears to the number of penguins?
4:24
Lina works at Job A for 5 hours and earns $125. Lina works at Job B at a rate of $2 more per hour than her rate at job A. If Lina earns $162 at Job B, how many hours did she work?
A runner jogs at 88 feet per second. What is their speed in miles per hour? (1 mile = 5,280 feet) Start with a ratio table to convert feet per second -> feet per hour, then use a second ratio table to convert feet per hour -> miles per hour
88 feet per second -> 316,800 feet per hour
316,800 feet per hour -> 60 miles per hour
Ed has a watch and shoe collection. He has 8 watches. This number represents 25% of the total number of watches and pairs of shoes in his collection. How many pairs of shoes does Ed have in his collection?
He has 24 pairs of shoes in his collection.
1. What is 12% of 60?
2. What is 15% of 120?
3. What is 18% of 90?
1. 7.2
2. 90
3. 16.2