Question

In one year, Michael earned $6300 as a work study in college. He invested part of the money at 9% and the rest at 7%. If he received a total of $493 in interest at the end of the year, how much was invested at 7%? How much was invested 9%?

Answer 1

x = the amount Michael invests in 9% (from total $6300)
y = the amount Michael invests in 7% (from total 7%)
So the first equation is about total amount he invests
x + y = $6300
the second equation about total interest rare he receives
9%x + 7%y = $493
now u can find your answer!
FEEL FREE TO HELP!!!^^

Answer 2

y = the amount Michael invests in 7% (from total $6300)