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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.

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. Correct Answer 21

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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