Question : If two successive discounts of 20% and 30% are given, what is the net discount (in %)?
Option 1: 40
Option 2: 44
Option 3: 56
Option 4: 60
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Correct Answer: 44
Solution : Single equivalent discount = $(a+b-\frac{a×b}{100}$)%, where $a$% and $b$% are successive discounts. So, the single discount of two successive discounts of 20% and 30% $=20+30-\frac{20×30}{100}=44\%$ Hence, the correct answer is 44.
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