Question:

Last year, the ratio of the prices of two articles A and B was 3 : 5. This year, the price of A is increased by 25% and that of B is decreased by ₹210. If the ratio of the present prices of A and B is 15 : 14, then the price of A last year was:

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When dealing with ratios and percentages, convert percentage changes into multiplication factors and set up equations based on the given relationships.
Updated On: Apr 17, 2025
  • ₹420
  • ₹435
  • ₹450
  • ₹600
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The Correct Option is A

Solution and Explanation

Let the price of A last year be \( x \) and the price of B last year be \( y \). We are given the ratio of the prices last year as 3 : 5, so \[ \frac{x}{y} = \frac{3}{5} \] We also know the price of A increases by 25% and that of B decreases by ₹210, giving us the equation \[ \frac{1.25x}{y - 210} = \frac{15}{14} \] Solve these equations to find the value of \( x \).
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