Firefighter Mathematics 2

Question 1

A fire hose loses 5 psi of pressure for every 50 feet of length. If the hose is 250 feet long, what is the total pressure loss?

Accepted Answer

25 psi

Answer

250 / 50 = 5 sections, and 5 x 5 psi = 25 psi.

Question 2

A water tank holds 1,200 gallons and drains at 80 gallons per minute. How long until it is empty?

Accepted Answer

15 minutes

Answer

1,200 / 80 = 15 minutes.

Question 3

What is 35% of 240?

Accepted Answer

84

Answer

0.35 x 240 = 84.

Question 4

A ladder reaches a window 24 feet up when its base is 7 feet from the wall. How long is the ladder?

Accepted Answer

25 feet

Answer

By the Pythagorean theorem, sqrt(24^2 + 7^2) = sqrt(625) = 25 feet.

Question 5

A pump moves 300 gallons in 4 minutes. At this rate, how many gallons does it move in 10 minutes?

Accepted Answer

750

Answer

300 / 4 = 75 gpm, and 75 x 10 = 750 gallons.

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