income and expenditure of a person are in the ratio 3 : 2 . if the income of the person is rs . 21000 , then find his savings ?
let the income and the expenditure of the person be rs . 3 x and rs . 2 x respectively . income , 3 x = 21000 = > x = 7000 savings = income - expenditure = 3 x - 2 x = x so , savings = rs . 7000 . answer : b
subtract(21000, multiply(divide(2, 3), 21000))