A tap can fill a cistern in 8 hours and another tap in 10 hours. How long will it to fill the tank if both taps are open together.
A) 2(4/9)hours
B) 4(4/9)hours
C) 5(4/9)hours
D) 7(4/9)hours
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B is the answer you can check by adding them up after converting them in one day work
sudip20:
one hour work would be more apt.
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