Part of $9,000 Is Invested at 11%, Another Part at 13

question 26

Multiple Choice

Part of $9,000 is invested at 11%, another part at 13%, and the remainder at 15% yearly interest. The total yearly income from the three investments is $1,210. The sum of the amounts invested at 11% and 13% equals the amount invested at 15%. Determine how much is invested at each rate, if 2,500 is invested at first rate.

• A)$2,500 at 11%, $2,000 at 13%, and $4,500 at 15%
• B)$3,000 at 11%, $1,000 at 13%, and $4,000 at 15%
• C)$3,500 at 11%, $1,000 at 13%, and $4,500 at 15%
• D)$3,000 at 11%, $2,000 at 13%, and $4,000 at 15%
• E)$2,000 at 11%, $3,000 at 13%, and $3,500 at 15%

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Definitions:

Short Run

The short run is a period in which at least one factor of production is fixed, limiting the ability of a business to expand or reduce its output.

Shut Down

A temporary choice made by a company to halt manufacturing because of unsuitable market circumstances.

Shutdown Point

The level of production and price at which the revenue of a firm covers its variable costs, below which the firm would cease operations.

Optimal Output

The level of production at which a firm achieves the highest possible profit, given its cost structure and the market price.