1. The contractor was engaged to construct a road in 16 days. After working for 12 days with 20 labours it was found that only $$\frac{5}{8}^{th}$$ of the road had been constructed. To complete the work in stipulated the number of extra labours required is:
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By: anil on 05 May 2019 03.02 pm
20 workers will do $$frac{5}{8}$$ work in 12 days => Remaining work = $$1-frac{5}{8}$$ $$=frac{3}{8}$$ Remaining time = $$16-12=4$$ days Let number of extra labours required = $$x$$ Using, $$frac{M_1D_1}{W_1}$$ $$=frac{M_2D_2}{W_2}$$ => $$frac{20 imes12}{frac{5}{8}}=frac{(20+x) imes4}{frac{3}{8}}$$ => $$20 imes12 imes3=(20+x) imes4 imes5$$ => $$20+x=36$$ => $$x=36-20=16$$ => Ans - (D)
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