A person has R200,000 invested, part at 9% and part at 8%. If the total yearly income from the two investments is R17200, how much is invested at 9% and how much at 8%?

2 answers

part at 9% -- x
part at 8% -- 200,000 -x

.09x + .08(200000-x) = 17200

take over
Good one but need a step