A trader gives successive discounts of 20\%, 10\% and 5\% respectively. What is the overall discount?

Explanation

Let the initial price be 100. After a 20\% discount, it becomes 80. After a 10\% discount, it becomes 80 - 8 = 72. After a 5\% discount, it becomes 72 - 3.6 = 68.4. The total discount is 100 - 68.4 = 31.6\%.

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