Multiple choice

An article having marked price, Rs900, was sold for Rs648 after two successive discounts. The first discount was 20%. What was the percentage rate of the second discount? एक वस्तु जिसका अंकित मूल्य 900 रुपये है, दो क्रमिक छूट के बाद 648 रुपये में बेची गई पहली छूट 20% थी। दूसरी छूट की प्रतिशत दर क्या थी?

  1. 5

  2. 15

  3. 10

  4. 12.5

  5. 12%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

After first discount of 20%, price = 900 × 0.8 = 720. Let second discount be d%. Then 720 × (1-d/100) = 648. Solving: 1 - d/100 = 648/720 = 0.9, so d/100 = 0.1, giving d = 10%. Option B (15%) would give final price 720 × 0.85 = 612. Option D (12.5%) would give 720 × 0.875 = 630. Option A (5%) is too small.

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