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

a. 1 hour 36 minutes
b. 1 hour 46 minutes
c. 2 hours 39 minutes
d. 4 hr 20 minutes

 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

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

Now,

60 minutes = 1 hour.

So, 1 minute will be  

Therefore, 96 minute will be equal to

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

Option (a) is CORRECT.

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6