A and b can do a piece of work in 12 days and 15 days respectively. they began to work together but a left after 4 days. in how many more days would b alone complete the remaining work?
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Work done by a in one say=1/12
And by B=1/15
Bothworkes for 4 days =4(1/12+1/15)
= 3/5
Work remaining=1-3/5 =2/5
B will complete the work in
2/5 / 1/15
=2/5 * 15 = 6 days. Ans
And by B=1/15
Bothworkes for 4 days =4(1/12+1/15)
= 3/5
Work remaining=1-3/5 =2/5
B will complete the work in
2/5 / 1/15
=2/5 * 15 = 6 days. Ans
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