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Mathematics 23 Online
OpenStudy (anonymous):

Katie invested $1200 at 8.5% interest. She earned $612 interest at the end of y years Whats is the Value of y? A. 18 B. 12 C. 6 D. 3 I will give medal and fan to best answer :)

OpenStudy (mertsj):

What formula are you using?

OpenStudy (anonymous):

hey

OpenStudy (anonymous):

what do u mean exactly?

OpenStudy (anonymous):

The formula mul div sub

OpenStudy (mertsj):

There is a formula for calculating interest that you are now studying. What is it?

OpenStudy (anonymous):

well for calculating 8.5% interest i times itbecause other than that i have no clue what your asking cause on the rest of my questions i have been using Price times rate time interest

OpenStudy (mertsj):

Interest = Principal times Rate times Time Or in symbols: I=Prt

OpenStudy (mertsj):

Plug in the numbers you are given and solve for t

OpenStudy (anonymous):

yea thats what i was using but it was still not a answer that i was givin but i'll try again

OpenStudy (mertsj):

\[612=1200(.085)t\]

OpenStudy (anonymous):

1200×8.5100 which is 102 then 102 x no.of years = 612 no.of years = 612/102 = 6 years

OpenStudy (mertsj):

1. Multiply 1200 and .085 2. Divide both sides of the equation by that answer. 3. That is t

OpenStudy (anonymous):

alright thanks both of you

OpenStudy (mertsj):

yw

OpenStudy (anonymous):

ok yw

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