5% more is gained by selling a watch for Rs. 350 than by selling it for Rs. 340. The cost price of the watch is ?->(Show Answer!)

1. 5% more is gained by selling a watch for Rs. 350 than by selling it for Rs. 340. The cost price of the watch is

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By: anil on 05 May 2019 01.49 am

Let cost price of watch = Rs. $$100x$$ When selling price = Rs. 340 => Profit % = $$frac{340-100x}{100x} imes 100 = frac{(340-100x)}{x}$$
Similarly, Profit % when SP = Rs. 350 = $$frac{(350-100x)}{x}$$ According to ques, => $$(frac{350-100x}{x})-(frac{340-100x}{x})=5$$ => $$(350-100x)-(340-100x)=5x$$ => $$5x=350-340=10$$ => $$x=frac{10}{5}=2$$ $$ herefore$$ Cost Price = $$100 imes 2=Rs.$$ $$200$$ => Ans - (C)

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