Instead of increasing a number successively by 20 percent and 30 percent, it is decreased by 22 percent. Resultant value is what percentage of the required correct value?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 50 %
Let the original number be x
Successive increase: x × 1.20 × 1.30 = x × 1.56
Decrease by 22%: x × 0.78
Percentage of resultant value:
(x × 0.78) / (x × 1.56) × 100 = 50%