Solve the Problem. -Walt Made an Extra $10,000 Last Year from a Part-Time

Multiple Choice

Solve the problem.
-Walt made an extra $10,000 last year from a part-time job. He invested part of the money at 2% and the rest at 3.25%. He made a total of $237.50 in interest. How much was invested at 3.25%?

A) $5000
B) $8000
C) $7000
D) $3000