Find a single discount equivalent to a series of discounts 10%, 20% and 30%श्रेणीक्रम में 10%, 20% और 30% बट्टों के समतुल्य एकल बट्टा ज्ञात कीजिये।

1. A50.2%
2. B50.4%
3. C49.6%
4. D51.0%

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Correct answer: C. 49.6%

Explanation

Price after discounts = 100 × 0.9 × 0.8 × 0.7 = 50.4. Single equivalent discount = 100 − 50.4 = 49.6%.बट्टों के बाद मूल्य = 100 × 0.9 × 0.8 × 0.7 = 50.4। समतुल्य एकल बट्टा = 100 − 50.4 = 49.6%।