A can do work in 10 days while b can do the same work in 12 days alone .if a and c can do same work together in 8 days then approximately in how many days b and b together can finish the same work
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9,3/13 will be the answer
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A can do work in 10 days while B can do the same work in 12 days alone .if A and C can do same work together in 8 days.
We have to find the number of days within B and C can do the same work.
A B A + C
10 days 12 days 8 days
Take LCM of 10 , 12 and 8 days. e.g., 120
A does (120/10) = 12 units of the work in a day.
B does (120/12) = 10 units of the work in a day.
A + C does (120/8) = 15 units of the work in a day.
∴ C does, 15 - 12 = 3 units of the work in a day.
now B + C = 10 + 3 = 13 units
no of days taken to do the same work by (B + C) = 120/13 days
Therefore 120/13 days taken by B and C to do the same work together.
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