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?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 23.50%.
First discount = 10%
Second discount = 15%
Total discount = first discount + second discount - (first discount × second discount)
⇒ Total discount = 10/100 + 15/100 - (10/100 × 15/100)
⇒ Total discount = 0.1 + 0.15 - 0.015 = 0.235
Total discount in % = 0.235 × 100 = 23.50%