Question

Tank is normally filled in 8 hours but takes 2 hours longer to fill because of a leak in its bottom. If the cistern is full, in how many hrs will the leak empty it?

Answer 1

Answer:

40 hours

Step-by-step explanation:

1/8 work done by filling tap in 1 hr

1/10 work done by both tap in 1 hr

also

1/8 - x = 1/10

that is

work done by leak = 1/8 - 1/10 = 1/40

that is time taken by leak = 40 hours

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