Part of $10,000 Is Invested at 9%, Another Part at 11

question 93

Multiple Choice

Part of $10,000 is invested at 9%, another part at 11%, and the remainder at 12% yearly interest. The total yearly income from the three investments is $1,100. The sum of the amounts invested at 9% and 11% equals the amount invested at 12%. How much is invested at each rate?

• A) $2,500 at 9%, $2,500 at 11%, and $5,000 at 12%
• B) $1,500 at 9%, $2,500 at 11%, and $6,000 at 12%
• C) $1,500 at 9%, $2,000 at 11%, and $6,000 at 12%
• D) $3,000 at 9%, $2,000 at 11%, and $5,000 at 12%

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Definitions:

Chemical Signals

Molecules released by cells that are used to communicate with other cells, affecting their behavior or physiology.

Pheromones

Chemical signals released by an organism to affect the behavior or physiology of other members of the same species.

First Messenger

A signaling molecule that binds to a receptor on the surface of a cell and triggers a biochemical cascade that conveys signals inside the cell.

Second Messenger

Intracellular signaling molecules released by the cell in response to exposure to extracellular signaling molecules.