NFSI Mathematical and Numeric Reasoning 4

Question 1

A firefighter pumps water at 200 gallons per minute. A pool-supply reservoir holds 8,000 gallons. How many minutes will the reservoir last?

Accepted Answer

40 min

Answer

8,000 ÷ 200 = 40 minutes.

Question 2

A crew of 6 firefighters splits a workload equally. If the total workload is 270 units, how many units does each firefighter handle?

Accepted Answer

45

Answer

270 ÷ 6 = 45 units each.

Question 3

A fire station runs 3 shifts of 24 hours each. If each shift has 8 firefighters, how many total firefighter-hours are worked in one full rotation?

Accepted Answer

576

Answer

3 shifts × 24 hours × 8 firefighters = 576 firefighter-hours.

Question 4

Thermal imaging cameras cost $3,500 each. If a department buys 4 cameras and receives a 10% bulk discount, what is the total cost?

Accepted Answer

$12,600

Answer

4 × $3,500 = $14,000; 10% discount = $1,400; $14,000 − $1,400 = $12,600.

Question 5

A firefighter lifts a 45-pound hose bundle and carries it 120 feet in 30 seconds. What is the carrying speed in feet per second?

Accepted Answer

4 ft/s

Answer

120 ÷ 30 = 4 feet per second.

NFSI - National Firefighter Selection Inventory Practice Test