A tap can fill a water tank in 8 hours and the other can empty it in 12 hours. how much time it takes to fill, if both work simultaneously. . .
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Answered by
0
Answer:
10 hour because tap one fill 8 hour and two fill 12 arithmetic mean of both 20 equal to 10
Answered by
1
Answer:
tap can fill the tank in 8 hours
tap can , in 1 hour, fill 1/8 part of tank
other tap can, in one hour, empty 1/12 part of tank
both taps will, in 1 hour, fill (1/8 - 1/12) part of tank
= (3 - 2)/24
= 1/24
thus, on opening both taps, the tank will fill in 24 hours
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