Correct Answer - Option 1 : 15 : 8
Given
Rohan starts a business = Rs. 75,000
Suraj starts a business = Rs. 60,000
Formula Used
Investment = capital × time
Profit ratio is equal to investment ratio
Calculation
Rohan investment for 12 months = 75000 × 12 = 900000
Surja investment for (12 - 4) months = 60000 × 8 = 480000
⇒ Investment Ratio (Rohan : Suraj) = 900000 : 480000 = 15 : 8
⇒ Profit Ratio = 15 : 8
∴ Their profit ratio at the end of the year is 15 : 8