Math, asked by Yusuf8123, 1 year ago

2 pipes a and b can fill a tank in 20 minutes and 30 minutes respectively. Both pipes are opened. The tank will be filled in just 15 minutes, if the b is turned off after:

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Answered by singhania62

Answer:

2 pipes a and b can fill a tank in 20 minutes and 30 minutes respectively. Both pipes are opened. The tank will be filled in just 15 minutes, if the b is turned off after a is is taken a time is after fill the first tank in just 10 minutes

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