After getting two successive discounts, a shirt with a list price of Rs. 150 is available at Rs. 105. If the second discount is 12.5%, find the first discount?एक कमीज़, जिसका सूचीबद्ध मूल्य ₹150 है, दो उत्तरोत्तर बट्टों (छूटों) के बाद ₹105 पर उपलब्ध है। यदि दूसरा बट्टा 12.5% है, तो पहला बट्टा ज्ञात कीजिए।

1. A15%
2. B20%
3. C25%
4. D17%

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Correct answer: B. 20%

Explanation

Price after first discount = 105 ÷ (1 − 0.125) = 105 ÷ 0.875 = 120. First discount = (150 − 120)/150 × 100 = 20%.पहले बट्टे के बाद मूल्य = 105 ÷ (1 − 0.125) = 105 ÷ 0.875 = 120। पहला बट्टा = (150 − 120)/150 × 100 = 20%।