Two successive discounts of 25% and 10% are equal to a single discount of:

💡 Solution & Explanation

Take the price as 100. After 25% off it is 75. The second discount of 10% is on 75, which is 7.5, leaving 67.5. The total reduction is 32.5, so the single discount is 32.5%. Shortcut: a + b − ab/100 = 25 + 10 − 2.5 = 32.5%. Simply adding gives 35%, which is too high.