Two water pumps are filling a pool. one of the pumps is high power and can fill the pool 5 hours before the other can do. however, they both working together can fill half of the pool in 3 hours. in how many hours the high power pump can fill the pool?

The high power pump can fill the pool in 10 hours.

Step-by-step explanation:

Let the high power pump fill the pool in x hours, then the other pump will fill the pool in (x + 5) hours.

Now, as given they together fill half of the the pool in 3 hours. So,

But, time can not be negative. So, x = 10 hours

Therefore, The high power pump can fill the pool in 10 hours.

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x

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