Gary Invests a Total Of $\$ 21,000$ In Two Accounts, One Paying

question 25

Essay

Gary invests a total of $\$ 21,000$ in two accounts, one paying $5.5 \%$ simple interest per year and the other paying $8.5 \%$ simple interest per year. His annual interest from both accounts is $\$ 1,280$ . How much did he invest at each rate?

---

Definitions:

Osteoclast Activity

The process involving osteoclast cells, which are responsible for bone resorption, part of the bone remodeling process.

Digestive System

The complex series of organs and glands responsible for the breakdown and absorption of nutrients, and the elimination of waste products from the body.

Osteoporosis

A condition characterized by decreased bone mass and density, leading to an increased risk of fractures.

Calcitonin

A substance secreted by the thyroid gland that assists in controlling blood calcium levels by preventing the breakdown of bone.