Rates & Ratios
A recipe calls for 3 cups of flour and 2 cups of sugar. If you want to make a larger batch using 12 cups of flour, how many cups of sugar do you need?
8 cups of sugar
Find the unit rate: 120 pages in 4 hours.
30 pages in 1 hour
What is 30% of 120?
36
12 is what percent of 60?
20%
In a bag of trail mix, the ratio of nuts to raisins is 5:3. If there are 20 nuts, how many raisins are in the bag?
12 raisins
A 6-pack of juice boxes costs $3.60. What is the unit price per juice box?
$0.60 per juice box
A video game is on sale for 25% off. If the original price is $60, what is the discount?
$15
In a class of 30 students, 18 have pets. What percent of the class has pets?
60%
If the ratio of cats to dogs at an animal shelter is 3:5 and there are 18 cats, how many dogs are there?
30
Store A sells 4 pounds of bananas for $3.20. Store B sells 6 pounds for $4.50. Which store has the better unit price?
Store B ($0.75/lb vs $0.80/lb)
A class has 25 students. If 40% of them play sports, how many students play sports?
10 students
A basketball player made 65% of her free throws. If she made 26 free throws, how many did she attempt? Show your work.
40 attempts
Maya is making trail mix. She wants to keep the ratio of nuts to raisins at 4:3. If she uses 20 cups of nuts, how many cups of raisins does she need?
15
Jake can type 180 words in 5 minutes. At this rate, how many words can he type in one minute?
36 words per minute
There are 150 books in the library. If 60% are fiction books, how many fiction books are there?
90 fiction books
A school has 240 students total. If 30% of them are in 6th grade, how many 6th grade students are there?
72 students
Two art classes are mixing paint. Class A mixes red and yellow in a 5:8 ratio and uses 30 drops of red. Class B mixes red and yellow in a 7:9 ratio and uses 42 drops of red. Which class will have more yellow paint?
Class B (54 drops yellow); whereas Class A (48 drops yellow)
Three friends are comparing their reading speeds: Alex reads 2 pages in 6 minutes, Sam reads 5 pages in 12 minutes, and Jordan reads 3 pages in 8 minutes. Rank them from fastest to slowest.
Sam(0.42 pages per min)
Jordan (0.375 pages per min)
Alex (0.33 pages per min)
In a survey, 40% of students chose pizza, 35% chose burgers, and the rest chose tacos. If 140 students chose pizza, how many students were surveyed total?
350 total students
A survey found that 72 out of 240 middle school students walk to school, while 96 students ride the bus. What percent of students walk to school?
30%