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CBSE Class 10 Answered

If 30 men can do a piece of work in11days-work in9 hours daily, how many hours a day 55men have to work in order to finish another piece of work thrice as great in 18 days 
Asked by aswinkumarak8912655 | 30 Oct, 2019, 01:22: PM
answered-by-expert Expert Answer
30 men can do a piece of work in 11 days working 9 hours
To complete the work, 30 men needs 11 x 9 = 99 hours
1 men can do the work in 99 x 30 = 2970 hrs
1 men require 297 x 3 = 8910 hrs to finish thrice the work
55 men can do thrice the work in 8910/55 = 162 hours
Since the work is completed in 18 days
So, 55 men have to work 162/18 = 9 hours a day
Answered by Renu Varma | 31 Oct, 2019, 10:05: AM

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