Two pipes can fill a tank separately in 20 minutes and 30
minutes respectively. If both the pipes are opened
simultaneously, then the tank will be filled in

(a) 10 minutes

(b) 12 minutes

(c) 15 minutes

(d) 25 minutes

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Two pipes can fill a tank separately in 20 minutes and 30 minutes respectively. If both the pipes a..

Answer / mukherzee

( b ) 12 minutes

Is This Answer Correct ?    5 Yes 0 No

Two pipes can fill a tank separately in 20 minutes and 30 minutes respectively. If both the pipes a..

Answer / tanu

(b) 12 minutes

Is This Answer Correct ?    1 Yes 0 No

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