NTN Mathematics and Arithmetic

Question 1

An officer works 8-hour shifts, 5 days a week. How many hours does the officer work in a 4-week month?

Accepted Answer

160 hours

Answer

8 hours × 5 days × 4 weeks = 160 hours.

Question 2

A patrol district covers 48 square miles and has 6 patrol zones. How many square miles does each zone cover equally?

Accepted Answer

8 square miles

Answer

48 ÷ 6 = 8 square miles per zone.

Question 3

A dispatcher received 240 calls in a 12-hour shift. What was the average number of calls per hour?

Accepted Answer

20 calls

Answer

240 ÷ 12 = 20 calls per hour.

Question 4

An officer travels 15 miles to a call at 30 mph. How many minutes does the trip take?

Accepted Answer

30 minutes

Answer

15 miles ÷ 30 mph = 0.5 hours = 30 minutes.

Question 5

A department has 120 officers. If 15% are assigned to detective units, how many officers are detectives?

Accepted Answer

18 officers

Answer

15% of 120 = 0.15 × 120 = 18 officers.

NTN - National Testing Network Practice Test