Question
The selling price of an item rises by Rs. 50 when the
profit percentage is increased from 20% to 30%. What is the cost price of the item?Solution
Let the cost price of the article be Rs. 100x Therefore, selling price of the article at 20% profit = Rs. 120x Selling price of the article at 30% profit = Rs. 130x Given, 130x – 120x = 50 Or, 10x = 50 Or, x = 5 Therefore, cost price of the article = Rs. 500
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