A's income is 25% more than B. By how much percent is B's income less than A?
The correct option is C 20%
Let B's income be ₹ 100
Then, A's income = ₹ 125
∴ Difference in income = ₹ 25
∴ Percentage by which B's income is less than A = 25125 ×100 = 20%
Hence, B's income is less than that of A by 20%.