A cistern has a leak which would empty it in 8 hours.A tap is turned on which admits 6 litres a minute in the cistern, and it is now emptied in 12 hours. How many litres does the cistern hold?

Challenger App

No.1 PSC Learning App

★

★

★

★

★

1M+ Downloads

A cistern has a leak which would empty it in 8 hours.A tap is turned on which admits 6 litres a minute in the cistern, and it is now emptied in 12 hours. How many litres does the cistern hold?

A8460 L

B4320 L

C8640 L

D4230 L

Answer:

C. 8640 L

Read Explanation:

Work done by leak in 1 hour = 1/8 Total work done by both pipes in 1 hour = 1/12 Work done by the pipe in 1 h = (1 / 8 – 1 / 12) = 1 / 24 Work done by the pipe in 1 min = 1 / 24 × 1 / 60 = 1 / 1440 Volume of 1 / 1440 part = 6L Volume of the whole cistern = 6 × 1440 = 8640

Read more in App

Related Questions:

A യ്ക്ക് 25 ദിവസത്തിനുള്ളിൽ ഒരു ജോലിയും B യ്ക്ക് അതേ ജോലി 35 ദിവസത്തിനുള്ളിലും ചെയ്യാൻ കഴിയും. അവർ 10 ദിവസം ഒരുമിച്ച് പ്രവർത്തിക്കുകയാണെങ്കിൽ, ശേഷിക്കുന്ന ജോലിയുടെ അംശം എന്താണ് ?

A can do a piece of work in 12 days. B can do it in 18 days. With the assistance of C, they completed the work in 4 days. C alone can do it in ______________days.

One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in :

'A' can do a piece of work in 10 days. He works at it for 8 days and then B finished the work in 16 days. How long will they take to complete the work if they do it together?

A cistern is normally filled in 8 hours but takes another 2 hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in :