Question : If A earns 25% more than B then how much percentage does B earn less than A:
Option 1: 15%
Option 2: 20%
Option 3: 25%
Option 4: 30%
Correct Answer: 20%
Solution :
Use: Percentage change = $\frac{\text{Final value - Initial value}}{\text{Initial value}}$ × 100%
Let B = 100
Then, A = 125% of 100 = 125
Required percentage $= \frac{125 - 100}{125}$ × 100%
= $\frac{25}{125}× 100$
= 20%
Hence, the correct answer is 20%.
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