SBI PO Prelim Exam Question

If 3 men can finish their work for 8 days, then how many men are needed to finish their work in 6 days? a) 5 Men b) 4 Men c) 8 Men d) None of these

Sweety
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SK

Sivaramareddy
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Ans: 4 Men. Explanation:::: 3 men completes 1/8 th of work each day. So 1 individual man can do (1/8)/3=(1/24) work per day. Similarly, In order to complete the work in 6 days. "x" no. of men need to complete 1/6th of work per day. So, 1 man completes (1/6x)th work per day. As the work power for each individual man i.e., portion of work completed per day by each man is same or equal. We can derive as (1/24)th work/day/man= (1/6x)th work/day/man. => x= 4. So 4 men can complete the same work in 6 days. Assuming each man has ideally same work power.