BMST Ratios, Proportions, and Percentages 4

Question 1

A tank is 3/5 full and contains 120 liters. What is the total capacity of the tank?

Accepted Answer

200 liters

Answer

120 = (3/5) × capacity, so capacity = 120 × 5/3 = 200 liters.

Question 2

If the price of an item drops from $150 to $120, what is the percent decrease?

Accepted Answer

20%

Answer

(150 − 120) / 150 × 100 = 30/150 × 100 = 20%.

Question 3

A team wins 18 out of 30 games. What percentage of games did they win?

Accepted Answer

60%

Answer

18 / 30 × 100 = 60%.

Question 4

A machine produces 450 parts in 5 hours. At the same rate, how many parts does it produce in 8 hours?

Accepted Answer

720

Answer

Rate = 450/5 = 90 parts/hour; 90 × 8 = 720 parts.

Question 5

The ratio of cats to dogs in a shelter is 3:5. If there are 40 dogs, how many animals are there in total?

Accepted Answer

64

Answer

Cats = (3/5) × 40 = 24; total = 24 + 40 = 64.

BMST - Basic Math and Science Test Practice Test