Solve the Problem. -A College Student Earned $7000 During Summer Vacation Working as Vacation

Multiple Choice

Solve the problem.
-A college student earned $7000 during summer vacation working as a waiter in a popular restaurant. The student invested part of the money at 10% and the rest at 9%. If the student received a total of $656 in interest at
The end of the year, how much was invested at 10%?

A) $777
B) $4400
C) $3500
D) $2600