Question

A pump will pump 125 gallons per minute. How long will it take to empty a 12,000 gallon tank?

Answer 1

Answer:  The correct option is (a) 1 hour 36 minutes.

Step-by-step explanation:  Given that a pump will pump 125 gallons per minute.

We are to find the time that the pump will take to empty a 12000 gallon tank.

We have

Time taken by the pump to empty 125 gallons = 1 minute.

So, the time taken by the pump to empty 1 gallon will be

$\dfrac{1}{125}~\textup{minute}.$

Therefore, time taken by the pump to empty 12000 gallons is given by

$\dfrac{1}{125}\times12000=96~\textup{minute}.$

Now,

60 minutes = 1 hour.

So, 1 minute will be  $\dfrac{1}{60}~\textup{hour}.$

Therefore, 96 minute will be equal to

$\dfrac{1}{60}\times96=1\dfrac{36}{60}=1~\textup{hour }36~\textup{minutes}.$

Thus, the pump will take 1 hour 36 minutes to empty 12000 gallon tank.

Option (a) is CORRECT.

Answer 2

This is 12,000 / 125 minutes  =   96 minutes

Answer is a.    1 hour 36 minutes.