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Mathematics 11 Online
OpenStudy (anonymous):

What is the principal balance if the principal plus interest at the end of 1.5 years is $3,360 at an annual interest rate of 8%?

OpenStudy (amistre64):

3360 = P(1.08)^1.5

OpenStudy (amistre64):

P = 3360/(1.08)^1.5

OpenStudy (anonymous):

it depends how often they pay interest

OpenStudy (amistre64):

time is still time right?

OpenStudy (amistre64):

2993.67 or so

OpenStudy (anonymous):

yep but if they pay at the end of 1st year and at the end of the second half year than ti will be x*1.008*1.004

OpenStudy (amistre64):

spose it starts in .5 and goes thru the next year? :)

OpenStudy (anonymous):

1 less 0 :D

OpenStudy (amistre64):

i think the .5 part of the time span takes that into account

OpenStudy (amistre64):

100(1.1)^.5 =?

OpenStudy (amistre64):

104.88

OpenStudy (amistre64):

so that accounts for 1/2 the year as opposed to the ful 10%

OpenStudy (anonymous):

it is just 8%

OpenStudy (amistre64):

not in my easier example for testing lol

OpenStudy (anonymous):

ohh, sorry :)

OpenStudy (amistre64):

100 at 10% for half a year

OpenStudy (anonymous):

shouldnt it be 105?

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