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If A can complete work in 6 days, B can complete the work in 8 days and C can complete the same work in 12 days. In how much time A, B, and C can complete the work.1. 3/4 days2. 8/3 days3. 5/2 days4. 3/8 days |
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Answer» Correct Answer - Option 2 : 8/3 days Given: A can do a work in 6 days, B can do the same work in 8 days And C can do the same work in 12 days Formula Used: Efficiency ∝ 1/Time taken Calculation: The efficiency of A = 1/6 per day The efficiency of B = 1/8 per day The efficiency of C = 1/12 per day A, B, C can do the same work in = ( 1/6 + 1/8 + 1/12 ) ⇒ ( 4 + 3 + 2 )/24 = 9/24 ∴ Time taken to complete work is 8/3 days. |
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