Correct Answer - Option 3 : 3 ∶ 2
Given:
The ratio of salaries of Raj and joy is 4 : 3
The ratio of their expenditure is 5 : 4
The ratio of salary and savings of Raj is 8 : 3
Formula used
Income = Expenditure + saving
Calculation
Let salary of Raj be 80x
So, Saving of Raj = 30x
Expenditure of Raj = 80x – 30x = 50x
Salary of Joy = (80x/4) × 3 = 60x
Expenditure of Joy = (50x/5) × 4 = 40x
Saving of Joy = 60x – 40x = 20x
Ratio of Raj and Joy’s saving = 30x ∶ 20x = 3 ∶ 2
∴ Ratio of Raj and Joy’s saving is 3 ∶ 2