A construction company employs 60 men to build a bridge of 500 m in 30 days working 8 hours a day. I

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02 Mar 2022 Time and Work

A construction company employs 60 men to build a bridge of 500 m in 30 days working 8 hours a day. If in 24 days they completed 3/5 part of work, then how many more employees should be hired to finish the work in time, working 10 hours a day?

OPtion

1) 36
2) 45
3) 68
4) 52
5) 58
6) 72
7) 66
8) 56
9) 60
10) None of these

Solution

Work completed by 60 men in 24 days, working 8 hrs/day=3/5, so remaining work=(1 - 3/5)=2/5
Let 'x' more men are employed to complete the remaining work in 6 days, working 10 hrs/day
Then, according to Men, days & work formula
60 men * 24 days * 8 hrs / (3/5) = (60+x) men * 6 days * 10 hrs / (2/5)
128 = (60+x)
x = 68

Correct Option: 3 Best Solution (0)