Question
A, B and C can complete the whole work in 20 days. A
starts the work and works for ‘x’ days while B and C complete the remaining 3/5 of the work in 15 days, then find the value of ‘x’.Solution
Time required by B and C to complete the work = 5 × 15/3 = 25 days Time taken by A, B and C = 20 days Total units of work = 100 units B and C one day work = 4 units A, B and C one day work = 5 units A’s one day work = 5 – 4 = 1 units Units of work done by A = 2 × 100/5 = 40 units Required value of x = 40/1 = 40 days
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