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Mathematics 7 Online
OpenStudy (anonymous):

A $7000 investment earns $840 annual simple interest in one year. What is the annual interest rate? A.12% B.12.5% C.13% D.13.5%

OpenStudy (skullpatrol):

any ideas?

OpenStudy (anonymous):

no

OpenStudy (skullpatrol):

$$\text{Amount invested X Annual interest rate = Annual simple interest}$$

OpenStudy (anonymous):

i need the interest rate not the simple interest rate

OpenStudy (skullpatrol):

The question asks for the "annual interest rate."

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

your equation was to find anual simple interest rate

OpenStudy (skullpatrol):

Amount invested = $7000 Annual simple interest = $840 Substitute those two values into the formula and solve for the unknown.

OpenStudy (skullpatrol):

This is a skill you will use in math a lot.

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