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If selling price is doubled, the profit triples. Find the profit percent?

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If selling price is doubled, the profit triples. Find the profit percent?
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3 Answers

  1. suppose buying price is 1/- then selling price make 2/-
    if selling price is doubled then SP = 4/-
    buying Price is = 1/-
    profit is = 4-1 = 3/-
    so profit percentage is (3/1)*100=300%

  2. (selling price-buying price)/buyingprice=profit ===> (selling price/buyingprice)-1=profit===> (selling price/buyingprice)=profit+1

    (2selling price-buying price)/buyingprice=3profit ==>2(profit+1)-1=3profit ===> profit=1 or 100%