14 pumps of equal capacity can fill a tank in 6 days . if tank has to be filled in 4 days what will be the no. of extra pumps needed
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it is inversely
14 pumps fill a tank in 6 days
1 pump fill a tank=14×6
no. of extra pump required=14×6/4=21
extra pump required=21 pump
14 pumps fill a tank in 6 days
1 pump fill a tank=14×6
no. of extra pump required=14×6/4=21
extra pump required=21 pump
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