The income of A is 25% more than that of B and the income of C is 65% less than the sum of the incomes of A and B. Income of C is what percent less than the income of A.

37

25% = \(\frac{1}{4}\)

ATQ,

                A   :   B   :   A + B   :         C

Income:   5   :   4   :      9       :   (9 × 35%)

Now,

                A      :         C

Income:   5      :    (9 × 35%)

             500     :        315

             100     :         63         ⇒ 37 (Difference)

So, Income of C is 37% less than the income of A.