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The efficiency of A, B and C is the same. They started working on a certain job. After 5 days a leaves, after 5 moere days B leaves and C completes the remaining work in 5 more days. Find the time taken by eahc of them alone to complete the job. (in days)?A. 20B. 30C. 40D. 45 |
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Answer» Correct Answer - B Let us assume that each of A, B and C alone can do in x-axis 15 days A works for 5 days, B works for 10 days and C works 15 days. `:. (5)/(x)+(10)/(x)+(15)/(x)=1` `(30)/(x)=1rArr=30` |
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