A lent Tk. 5,000 to B for 2 years and Tk. 3,000 to C for 4 years on simple interest at the same rate of interest and received Tk. 2,200 in all from both of them as interest. The rate of interest per annum is:

• ক 10% ✅ সঠিক উত্তর
• খ 9%
• গ 25%
• ঘ 20%