Three successive discounts of 12%, 13% and 11% are equivalent to an approximate single discount of:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e 32%.
We know that
Single discount = x + y + xy/100
here, x = 12 and y = 13
⇒ - 12 - 13 + 156/100 [negative sign shows the discount]
⇒ - 25 + 1.56 = 23.44%
Now,
⇒ x = 23.44 and y = 11
⇒ -23.44 - 11 + 257.84/100
⇒ -34.44 + 2.57
⇒ -31.87 or 32%