Question
A man earns a profit of 10 percent by selling a mobile
for a certain price. If he sells that mobile at double the price, then what will be the profit percentage?Solution
Let us assume the cost price of the mobile and selling price of the mobile is CP and SP respectively SP = (110/100) × CP ----(1) 2SP = (220/100) × CP ----(2) P% = [(2.2CP - CP)/C.P] × 100 = 1.2 × 100 = 120%
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