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With 20 per cent off, a marked price of 100 gives a sale price of:
A60
B90
C80
D70
Answer & Solution
Correct answer: C. 80
1. A 20 per cent discount removes 20 from every 100.
2. So 100 becomes 100 minus 20.
3. The sale price is 80.
4. The answer is 80.
_Source: NCERT Class 8 Mathematics, Ch 7 'Comparing Quantities'_
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