Question
A trader purchased a gadget and sold it at a profit of 30%.
If he had sold it at a profit of 18%, his profit would have decreased by Rs.180. What was the cost price of the gadget?Solution
ATQ,
Let the cost price of the gadget be Rs.x.
x × 130/100 – x × 118/100 = 180
13x/10 – 59x/50 = 180
(65x – 59x)/50 = 180
6x = 9000
x = 1500
The cost price of the gadget = Rs.1500
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