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1. 30 labourers, working 7 hours a day can finish a piece of work in 18 days. If the ladourers work 6 hours a day, then the number of labourers to finish the same piece of work in 30 days, will be.
- A. 15
- B. 15
- C. 15
- D. 15
Answer: Option C
Explanation:
In 18 days working 7 hours a day can finish 30 labours
In 30 days working 6 hours a day can finish = ( 18×30×7)/ ( 30×6) = 21
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