SrivaniK14 SrivaniK14
  • 12-06-2018
  • Mathematics
contestada

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?

Respuesta :

Wec
Wec Wec
  • 12-06-2018
24.5 hours

28+21=49

49/2=24.5
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