Mrs. Napholtz's Math Site
Investment Problems
Laura invested $2000, some at 8% per year and the rest at 10%, giving her a total return of $176 per year. How much did she invest at 8%?
Amount | Rate | Total Money | |
One Investment | n | 0.08 | 0.08n |
Other Investment | 2000 - n | 0.10 | 200 - 0.10n |
The total income from the two investments = $176
0.08n + 200 - 0.10n = 176
-0.02n + 200 = 176
-0.02n = - 24
n = 1200
Answer: $1200 at 8% and $800 at 10%