Question
A shopkeeper sells two articles at Rs 840 each. On one
he gains 20% and on the other he loses 20%. Find his total profit or loss.Solution
Let CP₁ be cost price of first article. SP₁ = 840, Profit = 20% 840 = 1.20 × CP₁ CP₁ = 840 / 1.20 = 700 For second article, SP₂ = 840, Loss = 20% ⇒ SP = 0.8 CP₂ 840 = 0.8 × CP₂ CP₂ = 840 / 0.8 = 1,050 Total CP = 700 + 1,050 = 1,750 Total SP = 840 + 840 = 1,680 Net loss = 1,750 − 1,680 = Rs 70 Answer: Loss of Rs 70.
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