Use the Increase Analysis method to compare investments whose financial details is given below (the discount rate is calculated by the formula I = (y / 15) +8, where y is the last 2 digits of your school number.

If the school number's last 2 digits are 11, the discount rate would be (11/5) +8 = 10.2 %).

discount rate = 8.6

t A -1.400 -1.600 -1800 1-5 400 500 600 5 800 900 1.000