Question
A can complete 1/4th of a work in 5 days while B can
complete 1/5th of the same work in 6 days. In how many days both of them together can complete the whole work?Solution
To complete the whole work, time taken by
A = 5 X 4 = 20 days
B = 5 X 6 = 30 days
Time taken by both of them together
=> (20 * 30)/(20 + 30) = 12 days
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