BSEP Ratios and Proportions 3

Question 1

A worker earns $84 in 7 hours. How much does she earn in 10 hours at the same rate?

Accepted Answer

$120

Answer

Hourly rate = $12/hr; 10 × $12 = $120.

Question 2

The ratio of red marbles to blue marbles is 5:3. If there are 24 blue marbles, how many red marbles are there?

Accepted Answer

40 marbles

Answer

5/3 = x/24, so x = (5 × 24) / 3 = 40.

Question 3

A photograph is 4 inches wide and 6 inches tall. If it is enlarged so the width becomes 10 inches, what is the new height?

Accepted Answer

15 inches

Answer

4/6 = 10/x gives x = 15 inches to maintain the same ratio.

Question 4

If 3 shirts cost $45, how much do 7 shirts cost at the same price?

Accepted Answer

$105

Answer

Each shirt costs $15; 7 × $15 = $105.

Question 5

In a poll, 3 out of every 8 people prefer brand A. In a group of 400 people, how many prefer brand A?

Accepted Answer

150

Answer

(3/8) × 400 = 150 people prefer brand A.

BSEP - Basic Skills Education Program Practice Test