A water purifier is on sale for 10% discount on the original price. A store-wide sale results in an additional discount of 15%. What is the total discount on the original price?
Answer & explanation
Correct answer: option 4
Two successive discounts of a% and b% = a + b - $\frac{a \times b}{100}$
Final discount after two successive discounts of 10% and 15%
= 10 + 15 - $\frac{10 \times 15}{100}$
= 25 - 1.5 = 23.50%