Question

A pipe can fill 4 water tanks in 2 hour 20 minutes how long will it take to fill 7search tanks using the same pipe

Answer 1

For 4 tanks 2 hours 20 minutes
So for 1 tank 0.5 hours 4 minutes
So for 7 tanks 3.5 hours 28 minutes

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Answer 2

For filing water in one tank it will take 140\4 minutes. Then filling 7 tanks it will take 980\4 that is 245 minutes.