You need to pump water to pump water out of a basement using 50 gallon per minute (gpm) pumps the basement has the dimensions shown and is flooded to the depth of 16 inches how long will it take to pump the water out of the basement

Your answer is, 146.82 min

Given that,

The two pumps working together would pump out water at a rate of 100 gallons per minute.

Step 1

find the area of the basement

Area of basement = (40)(50-22) + (22)(40-24)

                             = (40)(28) + (22)(16)

                             = 1120 + 352

                             = 1472

Step 2

find the volume of the basement

16in = 1.33333ft

volume of basement = 1472(1.3333)

                                 = 1962.66176

Step 3

time it take to pump the water out of the basement

1ft³ = 7.48052 gal

1962.66176ft³ = 14681.69 gal

Time = V / rate

Time = 14681.69 gal / 100 gal / min

Time = 146.82 min

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.