Question
Tap J can fill a tank completely in 3 hours while Tap K takes 3 hours more to fill the same tank completely. There is a hole at the bottom of the tank which can empty the full tank in 10 hours. How long does it take for the tank to be completely filled if both taps are turned on? Give your answer in whole number or decimal.
3 m

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Tap J can fill a tank completely in 3 hours while Tap K takes 3 hours more to fill the same tank completely. There is a hole at the bottom of the tank which can empty the full tank in 10 hours. How long does it take for the tank to be completely filled if both taps are turned on? Give your answer in whole number or decimal.