a pipe can fill 4 water tanks in 2 h 20min . how long will it take 7 such tanks ...
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Convert 2h 20 mins into mins
2h 20 mins = 140 mins
Find the time needed to fill 1 tank:
4 tanks = 140 mins
1 tank = 140 ÷ 4 = 35 mins
Find the time needed to fill 7 such tanks:
1 tank = 35 mins
7 tanks = 35 x 7 = 245 mins
Convert mins to hour and mins
245 mins = 4 hours 5 mins
Answer: It will take 4 hours 5 mins to fill up 7 such tanks.
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