Question
John bought a watch for Rs. 3,400 and sold it at a
profit percentage equal to the profit percentage earned on selling 10 bicycles for the cost price of 15 bicycles. Find the selling price of the watch.Solution
ATQ, Let the cost price of 1 bicycle = Rs. 100. Therefore, the cost price of 10 bicycles = Rs. 1,000. The selling price of 10 bicycles (which is the cost price of 15 bicycles) = Rs. 1,500. Profit on bicycles = Rs. 1,500 - Rs. 1,000 = Rs. 500. Profit % = 500/1000 × 100 = 50% Therefore, the selling price of the watch = 1.50 × 3400 = Rs.5,100
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