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

x=17

step-by-step explanation:

solve 3x-24=x+10

then that makes it 2x=34 because you subtract an x from both sides to get rid of the one on the right, and then you add 24 to both sides to get rid of the 24 on the left

divide by both sides by 2 to get your answer so that you can get your answer

1) is right

step-by-step explanation: