Question

The monthly incomes of A and B are in the ratio 4 : 5, their expenses are in the ratio 5 : 6. If 'A' saves Rs.25 per month and 'B' saves Rs.50 per month, what are their respective incomes?

• A. 500,400
• B. 450,550
• C. 550,450
• D. 400,500
• E. none

Answer 1

The correct option is D

400,500

Let incomes be 4x and 5x.

Let expenditures be 5y and 6y.

So $4x-5y=255x-6y=50$

So x=100

So the incomes of A and B are 400 and 500 respectively.