1. On decreasing the price of a fan by 40%, its sales increases by 50%. What will be the percentage increase or decrease in its revenue?
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By: anil on 05 May 2019 02.07 am
Let 10 fans are sold for Rs. 10, i.e. price of 1 fan = Re 1 => Revenue = $$10 imes10=Rs.$$ $$100$$ Price is decreased by 40%, => New price = $$10-(frac{40}{100} imes10)=Rs.$$ $$6$$ Similarly, new sales = $$10+(frac{50}{100} imes10)=15$$ => New revenue = $$6 imes15=Rs.$$ $$90$$ $$ herefore$$ % decrease in revenue = $$frac{(100-90)}{100} imes100=10\%$$ => Ans - (C)
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