The monthly incomes of A and B are in the ratio 6 : 5 and their expenses are in the ratio 9 : 7 . If A saves Rs. 300 and B saves Rs. 500. Find the income of B.

Income of A and B are in the ratio = 6 : 5

Expenses are in the ratio = 9 : 7

If A saves = 300/- of B saves = 500/-

Let as assume income of A & B is x

So, E = I – S

$42x-2100=45x-4500$

$3x=2400$

x = 800

'B' Income = 5x = 5(800)=4000/-