Mukul lent ₹9,300 on simple interest in two parts. He earned 5% per annum on the first part and 8% per annum on the second part. The total interest he received after 4 years is ₹2,400. What is the ratio of the money lent at 5% to that lent at 8%?
1
5 : 8
2
8 : 5
3
15 : 16
4
16 : 15