Question : The successive discounts of 15% and 20% are equivalent to a single discount of:
Option 1: 25%
Option 2: 28%
Option 3: 32%
Option 4: 35%
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Correct Answer: 32%
Solution :
Single equivalent discount $=(a+b-\frac{a×b}{100})$%, where $a=15\%$ and $b=20$% are successive discounts.
$\therefore$ Single equivalent discount $=15+20-\frac{15×20}{100}=35-\frac{300}{100}=32$%
Hence, the correct answer is 32%.
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