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- A can do a work in 4 days, B can do it in 5 days and C can do it in 10 days.
Question 1:
A can do a work in 4 days, B can do it in 5 days and C can do it in 10 days. A, B and C together can do the work in A. 1 3/5 days
B. 1 9/11 days
Feedback When A, B and C can do a work in x, y and z days respectively. Then, the three of them
together can finish the work in xyz/ x y + y z + x z days
That is, A, B and C together ca do the work in 4 × 5 × 10/ 20 + 50 + 40
= 4 × 5 × 10/110 = 20/11 = 1 9/11 days.
together can finish the work in xyz/ x y + y z + x z days
That is, A, B and C together ca do the work in 4 × 5 × 10/ 20 + 50 + 40
= 4 × 5 × 10/110 = 20/11 = 1 9/11 days.
C. 2 5/6 days
D. 3 days
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