Which of the following is a better investment?
Answer: D
For an investment of Rs.80, income = Rs.10
For an investment of Rs.100, income = Rs. (100 * 10)/80 = Rs.12.5
For an investment of Rs.70, income = Rs.15
For an investment of Rs.100, income = Rs. (100 * 15)/70 = Rs.21.43
For an investment of Rs.75, income = Rs.12
For an investment of Rs.100, income = Rs. (100 * 12)/75 = Rs.16