Working together, Pump C and Pump D can drain 2 pools in 21 hours. How long would it take each pump working individually to drain the same two pools if it takes Pump D 3 hours longer per one pool.

part 1 answer = 8

part 2 answer = 72

step-by-step explanation:

part 1 explanation = add all of the numbers, then divide by how many numbers you have. so, 200/25 = 8.

part 2 explanation = not gonna lie, this is hard to explain, so just google how to do it.

step-by-step explanation:

there are 36 inches in a yard

25 : 36 = 0.69 yards (you can round to 0.70)

answer: x=60

x = 3 ± √(5+y)