COOP Cooperative Admissions Mathematics 5

Question 1

Which of the following inequalities is true?

Accepted Answer

−2 < 0

Answer

−2 is to the left of 0 on the number line, so −2 < 0 is true.

Question 2

A rectangular pool is 25 m long and 10 m wide. What volume of water can it hold if it is 2 m deep?

Accepted Answer

500 m³

Answer

Volume = length × width × depth = 25 × 10 × 2 = 500 m³.

Question 3

A student scored 72, 85, 90, 68, and 80 on five tests. What is the average score?

Accepted Answer

79

Answer

(72 + 85 + 90 + 68 + 80) ÷ 5 = 395 ÷ 5 = 79.

Question 4

If a map has a scale of 1 inch = 50 miles, how many miles does 3.5 inches represent?

Accepted Answer

175 miles

Answer

3.5 × 50 = 175 miles.

Question 5

Which expression is equivalent to 2(3x − 5)?

Accepted Answer

6x − 10

Answer

Distribute: 2 × 3x = 6x and 2 × (−5) = −10, giving 6x − 10.

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