COOP Cooperative Admissions Mathematics 3

Question 1

A train travels 240 miles in 4 hours. What is its average speed in miles per hour?

Accepted Answer

60 mph

Answer

Speed = distance ÷ time = 240 ÷ 4 = 60 mph.

Question 2

What is the least common multiple (LCM) of 8 and 12?

Accepted Answer

24

Answer

The LCM of 8 and 12 is 24, since 24 is the smallest number divisible by both.

Question 3

A triangle has a base of 10 in and a height of 6 in. What is its area?

Accepted Answer

30 in²

Answer

Area = ½ × base × height = ½ × 10 × 6 = 30 in².

Question 4

Which number is a prime number?

Accepted Answer

37

Answer

37 has no factors other than 1 and itself, making it prime.

Question 5

If the ratio of boys to girls in a class is 3:5 and there are 24 boys, how many girls are there?

Accepted Answer

40

Answer

If 3 parts = 24, then 1 part = 8; so 5 parts = 40 girls.

COOP Exam Practice Test