A can complete certain work in 24 days b can do it in 16 days and c can do it in 40 days.if a start work before 2 days and c start work after 2 days find the time taken by all to complete work?
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A's working capacity = 1/24
B's working capacity = 1/16
C's working capacity = 1/40
Let time taken to finish the work = x days
Work done by all 3 in 1 day = 1/24+ 1/16 + 1/40 Â = 31/240
Work done by a alone in 2 days = 1/12
Work done by a and c in 2 days = 2(1/24 + 1/40)= 2/15
Work completed already = 2/15 + 1/12 = 13/60
Work left = 47/60 = 188/240 = 6 days
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