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a pipe fill a tank in 3hrs.another pipe fill that same tank
in 2hrs.if both pipe inserted in tank to fill it how timw it
will take to fill?
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Answer Posted / suresh
let the time be t
let the completed job=1
pipe1 be the pipe fills in 3hours and pipe2 be the pipe tat
fills in 2hours.
pipe1+pipe2=full tank
(t/3)+(t/2)=1
multiply by 60 to clear the denominators
60*(t/3)+60*(t/2)=60(1)
20t+30t=60
50t=60
t=60/50=1.2hours
the time taken to fill is 1.2hours
| Is This Answer Correct ? | 2 Yes | 0 No |
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