Answer : 3 15%

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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

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%