30 labourers working 7 hours a day can finish a piece of work in 18 days. If the

Question

30 labourers working 7 hours a day can finish a piece of work in 18 days. If the labourers work 6 hours a day, then the number of labourers to finish the same piece of work in 30 days, will be ?

Options:

A . 15

B . 21

C . 22

D . 25

Answer: Option B

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