Rates, Ratios, and Proportions Word Problems

John has 5 apples and wants to maintain the same ratio of apples to oranges in his fruit basket. If he plans to add 15 oranges, how many apples (x) should he add to maintain the ratio 3/5?

• x = 9

• x = 12

• x = 18

• x = 5

John is mixing paint for a large mural. He finds that a ratio of 4 parts blue paint to 7 parts yellow paint gives the perfect shade of green. If he has already used 16 parts of blue paint, how many parts of yellow paint does he need to maintain the ratio?

• 12

• 64

• 20

• 28

A car travels 240 miles in 4 hours. What is the rate of the car in miles per hour?

• 80 miles per hour

• 30 miles per hour

• 60 miles per hour

• 120 miles per hour

If 3 bags of apples cost $12, how much would 5 bags cost?

• $22

• $18

• $20

• $15

While preparing for a triathlon, Janecia swims 8 minutes for every 20 minutes she bikes.  If she swims 72 minutes, how long does she bike for?

• 180 minutes

• 144 minutes

• 92 minutes

• 80 minutes

Out of 50 students, 30 listed pizza as a favorite. If 190 students were surveyed, how many would list pizza as a favorite?

• 114 students would choose pizza as their favorite,

• 55 students would choose pizza as their favorite

• 48 students would choose pizza as their favorite

• 168 students would choose pizza as their favorite

Maria's car averages 25 miles per gallon of gas. At that rate, how far would it go on 16 gallons?

• 375 miles

• 320 miles

• 400 miles

• 500 miles

Diana uses 30 grams of coffee beans to make 48 fluid ounces of coffee. When guests come, she makes 96 fluid ounces of coffee. How many grams of coffee beans does Diana use when she has visitors?

Mathematical Equivalence

ON

A 12-ounce bottle of shampoo lasts Enrique 16 weeks. How many weeks would you expect an 18-ounce bottle of the same brand to last him?

Mathematical Equivalence

ON

About 13 out of 20 homes have a personal computer. On a street with 60 homes, how many computers would you expect to have? (a)  

• 39 Computers

• 4.3 Homes

• 39 Homes

• 4.3 Computers