A man divided Rs. 10000 into two parts. He invested one part at a simple interest of 12.5% for 4 years and the other part at an interest of 10% p.a. compounded annually for 2 years. If he received a total interest of Rs. 3840, find the ratio in which he divided the money.
1
1 ∶ 3
2
1 ∶ 4
3
3 ∶ 2
4
1 ∶ 1
5
3 ∶ 7