A pipe can fill a cistern in 10 hours . due to leak in the bottom it is filled in 12 hours . When the cistern is full how much time will it be emptied by the leak ?
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∴ Due to leakage the cistern gets emptied in = 1/(1/60) = 60 hours.
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Answer:
When there is no leakage A pipe can fill the cistern in = 10 hours
In 1 hour without leakage A pipe can fill the cistern in = 1/10 hours
When there is leakage cistern gets filled in = 12 hours In 1 hour,
when there is leakage cistern gets filled in = 1/12 hours In 1 hour,
due to leakage cistern gets filled to = 1/10 – 1/12 = (12-10)/120 = 2/120 = 1/60 part
∴ Due to leakage the cistern gets emptied in = 1/(1/60) = 60 hours.
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