Question

10 pipes of the same diameter can fill a tank in 24 minutes.
If 2 pipes go out of order, how long will the remaining pipes take to fill the
tank?

Answer 1

Answer:

30 minutes

Step-by-step explanation:

10 pipes of the same type fill in 24 minutes

1 pipe of the same type fill in 24 * 10 = 240

8 pipes of the same type fill in 240/8 = 30 minutes

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Answer 2

Answer:

'8' pipe will fill in 30 minutes.

Step-by-step explanation:

10 pipes fill in 24 minutes = 1 work

'Part of work done' by 10 pipes in 1 minute= $\frac{1}{24}$

'Part of work done' by 1 pipe in 1 minute = $\frac{1}{240}$

'Part of work done' by 8 pipe in 1 minute =  $\frac{1}{240}$ × 8 = $\frac{1}{30}$

so '8' pipe will fill in 30 minutes.