Ratios Rates & Percents

Simplify the ratio of
35 : 14

• 5 : 2

• 2 : 5

• 3 : 1

• 35: 14

15 out of 25 boys chose to go swimming at camp. What percent is that?

• 15%

• 20%

• 45%

• 60%

A bag of marbles comes with 3 blue marbles, 2 red marbles, and 5 yellow marbles. What is the ratio of red to yellow?

• 2:5

• 5:3

• 3:5

• 5:2

At a parking lot, the ratio of people to cars is 3 : 5 If there are 30 people, how many cars are there?

• 35

• 60

• 18

• 50

If 50 is 25% of a number, what is the number?

• 200

• 100

• 150

• 250

Answer explanation

To find the number, divide 50 by 25% (or 0.25). 50 ÷ 0.25 = 200. Therefore, the number is 200.

A quarterback completed 68% of his passes in a game. He threw 25 passes. How many passes did the quarterback complete?

• 18

• 17

• 15

• 20

In a certain apartment building, the ratio of tenants to cars is 3:5. If there are 30 tenants, how many cars are there?

• 35

• 60

• 18

• 50

If 8 is 40% of a number, what is the number?

• 20

• 10

• 15

• 25

Answer explanation

To find the number, divide 8 by 0.40 (40%). 8 ÷ 0.40 = 20. Therefore, the number is 20.

Rancher Rob shipped 520 head of cattle in 12 hours. At this rate, how many head of cattle did Rancher Rob ship in 3 hours?

• 130

• 2,080

• 65

• 43

A 6-foot tall person casts a 4-foot shadow. At the same time, a nearby tree casts a 12-foot shadow. How tall is the tree?

• 9 feet

• 18 feet

• 8 feet

• 12 feet

Answer explanation

The ratio of the person's height to their shadow length is the same as the ratio of the tree's height to its shadow length. Using this, the tree's height can be calculated as 6/4 * 12 = 18 feet.