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Mathematics 14 Online
OpenStudy (anonymous):

Interest Questions... Continued...

OpenStudy (anonymous):

OpenStudy (anonymous):

A=P(1+rt)

OpenStudy (anonymous):

The answer isn't 11.5 or 12.5%

OpenStudy (anonymous):

@Mertsj

OpenStudy (anonymous):

i was thinking 500=480*(1+(130/360))

OpenStudy (mertsj):

Why 130 days?

OpenStudy (anonymous):

he sells it for 480 after 130 days... i dont know. i think that's the part i have wrong.

OpenStudy (mertsj):

The note only has 110 more days to go on the note. Because Homer sold a 240 day note after 130 days.

OpenStudy (anonymous):

ohh

OpenStudy (anonymous):

im getting .1363636363

OpenStudy (anonymous):

thats wrong apparently ^^^

OpenStudy (mertsj):

Your equation doesn't seem to have an r in it and you are trying to find r

OpenStudy (anonymous):

yes that's what i get for r

OpenStudy (mertsj):

Moe is going to get more than 500 because he will get the interest on the 500 for 240 days at 6%. So he will get 500+500(.06)(2/3)

OpenStudy (mertsj):

So Moe will get 520 dollars.

OpenStudy (anonymous):

the answer is a percent

OpenStudy (mertsj):

What is your point?

OpenStudy (mertsj):

Why do you have 500 in your formula?

OpenStudy (anonymous):

i dont know i'm freakin retarded when it comes to math..........

OpenStudy (mertsj):

Moe invests $480 for 110 days and gets 520 back. So he makes $40 in 110 days. So using the simple interest formula that I = Prt 40=480(r)(110/360) r=27.3%

OpenStudy (mertsj):

Or using your formula 520=480(1+110/360r)520=480+480x110/360xr 40=146.67r r=27.3%

OpenStudy (mertsj):

Is that the right answer?

OpenStudy (anonymous):

yeah thats right...

OpenStudy (anonymous):

OpenStudy (anonymous):

ok i need more help... im awful with these for some reason....

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