Vinod sold a watch to Arun at a gain of 12% and Arun had to sell it to Manoj at a loss of 5%if Manoj paid Rs3990 for it, how much did Vinod pay for the watch?
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Solution
Let Vinod Payed Rs.x.
Arun bought it for 112%×x=1.12x
Manoj bought it for 95%×x=0.95x=Rs.3990⟹x=Rs.3,750