If 15 pipes can fill a tank in 2 hours 40 minutes, how much longer will it take if there are
only 4 pipes of the same type?
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Answer of question:
42.66 mins
Step-by-step explanation:
15 pipes will fill in 2hrs and 40 mins =160mins
1 pipe will fill in =160/15
4 pipes will fill in 160/15*4
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