Question: if 10 labourers can dig a well 40 m deep in 18 days, working 9 hours a day, how many additional labourers should be

if 10 labourers can dig a well 40 m deep in 18

if 10 labourers can dig a well 40 m deep in 18 days, working 9 hours a day, how many additional labourers should be engaged to dig a similar well 80 m deep in 6 days, each labourer working 9 hours a day? a) 30 b) 40 c) 50 d) 60 e) None of these

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