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Mathematics 15 Online
OpenStudy (anonymous):

hello i was wondering if someone could help me with this problem: just paid the bank $19.48 interest at 9.5% for 90 days and now i need to find out the amount borrowed, i set up the formula 19.48 .095*90/360, * the denominator, divided the numerator by .02375 what it comes up with is not the correct answer i need i am missing something can you help? thanks in advance

OpenStudy (anonymous):

we back again

OpenStudy (anonymous):

just trying to write a formula in excel to help me so i dont keep pestering you lmao

OpenStudy (anonymous):

\[I=P\times r\times n\\19.48=P\times0.095\times{90\over360}\] seems like you got it the other way :)

OpenStudy (anonymous):

the answer it comes up with is 820.21

OpenStudy (anonymous):

well thats what the book says lol

OpenStudy (anonymous):

thats the answer aint it?

OpenStudy (anonymous):

its the principle i need to get the answer for, so what am i missing?

OpenStudy (anonymous):

thats what the book says my excel says different lol

OpenStudy (anonymous):

eh? may be you entered it wrong

OpenStudy (anonymous):

my formula is wrong somewhere

OpenStudy (anonymous):

finding the principle has been hard for me, dont know y

OpenStudy (anonymous):

I think you took the interest 19.48 as your principal!!!!

OpenStudy (anonymous):

maybe so, so what should i / numerator by ?

OpenStudy (anonymous):

divide / lol

OpenStudy (anonymous):

i know i am a pain

OpenStudy (anonymous):

\[P=\frac{I}{r\times n}\]

OpenStudy (anonymous):

\[P=\large\frac{19.48}{0.095\times\Large{90\over360}}\]

OpenStudy (anonymous):

:) enjoy.

OpenStudy (anonymous):

you are welcome.

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