A student wants to have R300 000 at graduation 4 years from now to buy a car. Her grandmother gave her R150 000 as a high school graduation present. How much must the student save each year (starting at the end of year 1) if she deposits the R150 000 she got from her grandmother today and she can earn 12% per year on both the R150 000 and her own savings in a mutual fund her grandmother recommends