Saurabh needs to finish his homework in 5 hours. He has finished some part of the work in 325 hours. How many hours does he need to work more to complete his homework?
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Answer: Correct option is
C
34 men
Work efficiency of 34 men in 8 days working 9 hours a day is
5
2
th
Hence, work efficiency of x men to finish rest of the work in 6 days working 9 hours a day = 1−
5
2
=
5
3
∴ By direct proportionality,
5
2
34×8×9
=
5
3
x×6×9
∴34×72×
5
3
=x×54×
5
2
∴x=
54×2×5
34×72×3×5
∴x=68
Hence extra men required = 68−34=34men
So, the answer is option C
Step-by-step explanation:
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