There are two taps opening into a tank. If only the frist tap is opened, the tank fills in 10 minutes. If only the second tap is opened, it takes 15minutes to fill the tank, if both taps are opened, how much time would it take to fill the tank?
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15-10=5 tank takes 5 minute to fill
Gunungir1234:
5min
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Here you go***
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