Working together, two pumps can drain a certain pool in 4 hours. if it takes the older pump 9 hours to drain the pool by itself, how long will it take the newer pump to drain the pool on its own?

Number of hours newer pump needed to drain is given by

Step-by-step explanation:

Since we have given that

Number of hours taken by two pumps = 4 hours

Work done by two pumps =

Number of hours taken by older pump = 9 hours

Work done by older pump =

According to question, work done by new pump would be

So, Number of hours newer pump needed to drain is given by

17 1/3

step-by-step explanation:

answer: dead jah

step-by-step explanation:

bullet + jah= dead jah