Question : If A's salary is 30% more than B's salary, then by what percentage is B's salary less than that of A? (correct to one decimal place)
Option 1: 17.5%
Option 2: 23.1%
Option 3: 25%
Option 4: 19.7%
Correct Answer: 23.1%
Solution :
Let B's salary be 100
Then, A's salary = 130
Difference in salaries = 130 – 100 = 100
Required percentage = $\frac{\text{Difference in salary}}{\text{A's salary}}\times100$
= $\frac{30}{130}\times100$
= 23.07
Hence, the correct answer is 23.1%.
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