BMST Ratios, Proportions, and Percentages 3

Question 1

A store sells juice in two sizes: a 12 oz bottle for $1.80 and a 20 oz bottle for $2.80. Which is the better unit price?

Accepted Answer

The 20 oz bottle

Answer

12 oz = $0.15/oz; 20 oz = $0.14/oz, so the 20 oz bottle is cheaper per ounce.

Question 2

The ratio of red to blue marbles is 4:7. If there are 28 blue marbles, how many red marbles are there?

Accepted Answer

16

Answer

4/7 = x/28, so x = 4 × 28 / 7 = 16.

Question 3

A worker earns $720 in 6 days. How much will the worker earn in 9 days at the same rate?

Accepted Answer

$1,080

Answer

Daily rate = 720/6 = $120; 120 × 9 = $1,080.

Question 4

What percentage of 250 is 75?

Accepted Answer

30%

Answer

75 / 250 × 100 = 30%.

Question 5

A shirt originally costs $60. It is on sale for 15% off. What is the sale price?

Accepted Answer

$51

Answer

Discount = 0.15 × 60 = $9; sale price = 60 − 9 = $51.

BMST - Basic Math and Science Test Practice Test