Question : A water purifier is on sale for a 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?
Option 1: 18.50%
Option 2: 19.50%
Option 3: 22.50%
Option 4: 23.50%
Correct Answer: 23.50%
Solution :
We know, Single equivalent discount = $(a+b-\frac{a×b}{100}$)%, where $a$% and $b$% are successive discounts.
Here, $a$ = 10% and $b$ = 15%
$\therefore$ Single equivalent discount $= 10 + 15 - \frac{10 × 15}{100}=25-1.50=23.50\%$
Hence, the correct answer is 23.50%.
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