Income and expenditure of a person are in the ratio 5:4. If the income of the person is Rs.18000, then find his savings? Choose one.
A) rs . 3600 B) rs . 3629 C) rs . 3279 D) rs . 3629 E) rs . 3283

Rationale: "let the income and the expenditure of the person be rs . 5 x and rs . 4 x respectively . income , 5 x = 18000 = > x = 3600 savings = income - expenditure = 5 x - 4 x = x so , savings = rs . 3600 . answer : a"
Answer: A