The ratio of monthly incomes of A and B is 4 : 5 and that of their monthly expenditures is 3 : 8. If the income of A is equal to the expenditure of B, then what is the ratio of savings of A and B ?

5 : 2

                     A  :  B

Income          4   :  5            

Expenditure    3  :  8

Given, 4R₁ = 8R₂,

            R₁ = 2R₂ = R

Monthly income of A = 8R, B = 10R

Expenditure of A = 3R, B = 8R

Savings = Income - Expenditure

Ratio     A  :  B = 5 : 2