Question

the monthly incomes of a and b are in the ratio 5:4 and their monthly expenditure are in the ratio 7:5 if each saves rupees 9000 per month find the monthly income of each.​

Answer 1

Answer:

Step-by-step explanation:

Let the income of A be = 5x

Let the income of B be = 4x

   

Let the expenditure of A=7y

Let the expenditure of B=5y

Income - expenditure =savings

Therefore,

5x-7y=9000

4x-5y=9000

25x-35y=45000

28x-35y=63000

= -3x=-18000

therefore,x=6000

Income of A=6000*5

                   =30000 rs

Income of B=6000*4

                   =24000 rs