PSAT/NMSQT Mathematical Problem Solving 5

Question 1

A phone plan costs $30 plus $0.10 per minute. What is the cost for 200 minutes?

Accepted Answer

$50

Answer

$30 + 200 × $0.10 = $30 + $20 = $50.

Question 2

If 3x + 2y = 12 and x = 2, what is y?

Accepted Answer

3

Answer

6 + 2y = 12, so 2y = 6 and y = 3.

Question 3

A circle has radius 5. What is its circumference? (Use π ≈ 3.14)

Accepted Answer

31.4

Answer

C = 2πr = 2 × 3.14 × 5 = 31.4.

Question 4

What is 0.6 written as a fraction in lowest terms?

Accepted Answer

3/5

Answer

0.6 = 6/10 = 3/5 after simplifying.

Question 5

The sum of three consecutive integers is 48. What is the largest?

Accepted Answer

17

Answer

The integers are 15, 16, 17; the largest is 17.

PSAT/NMSQT Practice Test