Two 1-3/4 inch hose lines are delivering 150 GPM each from a 750 gallon booster tank. How many minutes will the booster tank be able to supply to both lines without refilling?

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Prepare for the Apparatus Operator/Pumper Test. Utilize flashcards and multiple-choice queries, complete with hints and explanations. Ensure success on your exam!

Multiple Choice

Two 1-3/4 inch hose lines are delivering 150 GPM each from a 750 gallon booster tank. How many minutes will the booster tank be able to supply to both lines without refilling?

Explanation:
The main idea is to compare the booster tank’s capacity with the combined discharge of both hoses. Each hose delivers 150 GPM, so together they pump 300 GPM. With 750 gallons in the tank, time to empty is 750 ÷ 300 = 2.5 minutes. So the booster tank can supply both lines for 2.5 minutes without refilling. (For context, one hose alone would last 750 ÷ 150 = 5 minutes; using two doubles the flow and halves the duration.)

The main idea is to compare the booster tank’s capacity with the combined discharge of both hoses. Each hose delivers 150 GPM, so together they pump 300 GPM. With 750 gallons in the tank, time to empty is 750 ÷ 300 = 2.5 minutes. So the booster tank can supply both lines for 2.5 minutes without refilling. (For context, one hose alone would last 750 ÷ 150 = 5 minutes; using two doubles the flow and halves the duration.)

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