A water pipe can fill half of the wster tank in 2 hours. How much time it will take to fill five such tsnks
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it takes 20 hrs to fill five such water tanks
in the given time 2hrs it can fill the half of the tank
therefore, it can fill a tank in 4hrs
4 x 5 = 20 ( we need to fill 5 such tanks)
therefore, it takes 20hrs to fill
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