Correct Answer - Option 2 : Rs. 120

**Given**

Principal for Anupam = Rs. 8000

Principal for Aman = Rs. 8000

Time period for Anupam = 2 years

Time period for Aman = 4 years

Rate of interest for Anupam = 12/2%

Rate of interest for Aman = 15/4%

**Formula used**

simple interest = (Principal × Rate × Time)/100

**Calculation **

Gain in two years = [(8000 × 15/4 × 4)/100] - [(8000 × 12/2 × 2)/100]

Gain in two years = 240

Gain per year = 120

∴ the gain in transaction per years is Rs. 120