A number is increased by 30% and then again increased by 30%. By what percentage should the increased number be reduced so as to get back the original number?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 40.82%.
Let the number be 100.
It is increased by 30% and then again increased by 30%
New number = 100 × (130/100) × (130/100) = 169
The percentage by which the increased number must be decreased to get back the original number = (169 - 100)/169 × 100 = 40.82%