Worker A takes 8 hours to do a job. Worker B takes 10 hours to do the same job. How long it take both A & B, working together but independently, to do the same job?
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Answered by
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A's one hour work = 1/8.
B's one hour work = 1/10.
(A+B)'s one hour work = 1/8+1/10 = 9/40.
Both A & B can finish the work in 40/9 days
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Answered by
5
Answer:
4hr 4min
4hr 4minStep by step explanation:
Given:-
Time taken by worker A to complete work = 8 hr
Time taken by worker B to complete work = 10 hr
A's 1 hour work = 1/8
B's 1 hour work = 1/10
Therefore total work to be done by (A + B) in 1 hour = 1/8 + 1/10
= 9/40
Hence, time taken by both of them to complete the work = 40/9 hr = 4 hr 4min
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