A value is increased by 30% and then decreased by an unknown percentage to return to the original value. What is the percentage decrease required?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 23.08%.
Let original value = 100
New value = 100 + 30 = 130
Need to be reduced = 130 - 100 = 30
Required percentage = (30/130) × 100 ≈ 23.08%