Income and expenditure of a person are in the ratio 9 : 8. If the income of the person is Rs. 36000, then find his savings?	Choose the correct choice from the following.
A) 2000  B) 3000  C) 4000  D) 5000  E) 6000

Rationale: "let the income and the expenditure of the person be rs . 9 x and rs . 7 x respectively . income , 9 x = 36000 = > x = 4000 savings = income - expenditure = 9 x - 8 x = x so , savings = rs . 4000 . answer : c"
Answer: C