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tap a can till tank in 28 hours, while tap B can fill the same tank in 21 hours. if both taps are open together, how long will it take to fill an empty tank?
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tap a can till tank in 28 hours, while tap B can fill the same tank in 21 hours. if both taps are open together, how long will it take to fill an empty tank?

User Compostus
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8.2k points

1 Answer

1 vote
24.5 hours

28+21=49

49/2=24.5
User Jpjacobs
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7.1k points
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