Question : If two successive discounts of 50% and 10% are offered, what is the net discount (in %)?
Option 1: 50
Option 2: 55
Option 3: 60
Option 4: 65
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Correct Answer: 55
Solution : Single equivalent discount = $(a+b-\frac{a×b}{100}$)%, where $a$% and $b$% are successive discounts. First discount = 50% Second discount = 10% So, single discount = $50 + 10 - \frac{50×10}{100}= 55$% Hence, the correct answer is 55.
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