algebra
posted by evian .
1. A professor has RM 15000 to invest for one year, some are 8% and the rest are at 7% annual interest. If she will earn RM 1100 from these investments, how much did she invest at each rate? (4 marks)

x+y = 15000
.08x + .07y = 1100
Now just solve for x at 8% and y at 7%