Math, asked by shanmathis855, 8 months ago

Pipe P fills a tank in 10 hours and Q in 20 hours and R empties it in 30 hours.
Two more similar emptying pipes are added with them. Find the time taken to fill
the fill the half of the tank.

Answers

Answered by chirag2552W

2

Answer:

20 hours

not sure about this ans

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