A contractor agrees to lay a road 3000m long in 30 days. 50 Men are employed and they work for 8 hours a day. After 20 working days, he finds that only 1200 m of the road is completed. How many more men does he need to employ in order to finish the project on time if each man now works 10 hours a day?
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Answer:
he need extra 70 mens to complete project on time
Step-by-step explanation:
- (50×20×8)+(y×10×10)=20000 (y= men)
- y=120
- y=50+70
- need men=70
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