-
The ratio of monthly incomes of A, B is 6 : 5 and their monthly expenditures are in the ratio 4 : 3. If each of them saves ₹ 400 per month, find the sum of their monthly incomes.
-
- 2300
- 2400
- 2200
- 2500
Correct Option: C
Income of A and B = ₹ 6x and 5x
Expenses of A and B = ₹ 4y and 3y
∴ 6x – 4y = 400 ...(i)
5x – 3y = 400 ...(ii)
By equation (i)× 3 – (ii) × 4
⇒ 18x – 12y –20x + 12y
= 1200 – 1600
⇒ 2x = 400 ⇒ x = 200
∴ Total income
= 6x + 5x = 11x = ₹ 2200
