Question

The monthly income of A and B are in the ratio 5:4 and their monthly expenditure are in the ratio 7:5. if each saves Rs 3000 per month. find the monthly income of each.

Answer 1

from question .
5x-7y= 3000....I×5
4x-5y= 3000...II×7
25x-28x= 15000-21000
or, -3x= -6000 x= ₹2000
so their monthly incomes are 5×2000 and 4×2000 it means ₹10000 and ₹8000

Answer 2

₹10000 and ₹ 8000 is your answer