The list price of a clock is Rs 160. A customer buys it for Rs. 122.40 after two successive discount. If first discount is 10% the second is
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Answer : 3 15%

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Given list price - rs160
After 10% discount
90/100 × 160 = rs 144
Other discount be x%
So,
100-x/100 × 144 = 122.40
100-x = 12240/144
100-x = 85
x = 100-85
15%

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