By selling a book for ₹ 18 the shopkeeper loses 10%. At what price should he sell it to gain 10%.
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By selling a book for ₹ 18 the shopkeeper loses 10%. At what price should he sell it to gain 10%.
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here Sp = 18
loss% = 10
cp= 100/(100-10) × 18
cp = 100/90 × 18
= 20
now to make profit of 10% sp should be
sp = (100+10)/100×cp
sp=110/100×20
sp=22
so he should sell it at a price of 22