New Jersey Civil Service Exam Mathematics 5

Question 1

A civil service roster lists 120 employees. If 5 out of every 8 are full-time, how many are full-time?

Accepted Answer

75

Answer

5/8 × 120 = 75 full-time employees.

Question 2

A clerk receives a mileage reimbursement of $0.67 per mile. If the clerk drives 145 miles, what is the total reimbursement?

Accepted Answer

$97.15

Answer

145 × $0.67 = $97.15.

Question 3

The average of five test scores is 82. Four of the scores are 78, 85, 90, and 76. What is the fifth score?

Accepted Answer

81

Answer

Total needed = 82 × 5 = 410; sum of four = 329; fifth score = 410 − 329 = 81.

Question 4

A fence requires posts every 8 feet. If the fence is 200 feet long with posts at both ends, how many posts are needed?

Accepted Answer

26

Answer

200 ÷ 8 = 25 intervals; 25 + 1 = 26 posts.

Question 5

A water department reads a meter at 4,382 gallons in January and 6,019 gallons in April. What is the average monthly usage over those 3 months?

Accepted Answer

546

Answer

(6,019 − 4,382) ÷ 3 = 1,637 ÷ 3 ≈ 546 gallons per month.

New Jersey Civil Service Exam Practice Test