Question

A tank can be filled in 10 hours. After a leak in its bottom, it takes 12 hours to fill the tank. Find the time taken by the leak to empty the full tank?​

Answer 1

Answer:

Part of the tank filled in one hour before the leak = 

Part of the tank filled in one hour after the leak = 

Part of the tank emptied in one hour by the leak =  - 

 part of tank will be emptied in one hour by the leak

∴ The full tank will be emptied by the leak in 60 hours.

Solution 2:

Apply formula; = 

X = 10 hours

Y = 12 hours

∴  = 60 hours

Step-by-step explanation:

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