Example 1 · level 1
Meera gets a 50% discount on a ₹400 purchase. How much money is saved?
Show solution
- 50% of ₹400 = 400 × 50 ÷ 100
- = 20,000 ÷ 100 = ₹200.
Answer: ₹200
CLASS 8 MATHS · COMPARING QUANTITIES
Find a percentage of an amount
x% of an amount = amount × x ÷ 100. 10% is a tenth, 25% a quarter, 50% a half.
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Worked examples
Example 2 · level 2
Lakshmi gets a 18% discount on a ₹4,000 purchase. How much money is saved?
Show solution
- 18% of ₹4,000 = 4,000 × 18 ÷ 100
- = 72,000 ÷ 100 = ₹720.
Answer: ₹720
Example 3 · level 3
Harpreet gets a 12.5% discount on a ₹5,240 purchase. How much money is saved?
Show solution
- 12.5% of ₹5,240 = 5,240 × 12.5 ÷ 100
- = 65,500 ÷ 100 = ₹655.
Answer: ₹655