The income of A is 70% more than the income of B, end the income of C is 80% of the combined income of A and B. By what percentage is the income of A less than of C? (Correct to one decimal place)
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 21.3%.
The income of A is 70% more than the income of B.
The income of C is 80% of the combined income of A and B.
Let the income of B be 100a
So, the income of A = 100a × 170% = 170a
Sum of income of A and B = 100a + 170a = 270a
Income of C = 270a × 80% = 216a
Difference of income of C and A = 216a - 170a = 46a
Required% = (46a/216a) × 100 = 21.29 ≈ 21.3%