SOLUTION: six pipes can fill a tank in 90 minutes.how long will it take to fill the tank by 10 pipes?

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Question 757495: six pipes can fill a tank in 90 minutes.how long will it take to fill the tank by 10 pipes?
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
6 pipes can fill a tank in 90mins
1 pipe can fill a tank in 90/6 = 15mins
So 10 pipes will fill the tank in 10 * 15mins
= 150mins or 2hours 30mins.
Hope this helps.
:-)