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all right

begin with 320,000.

so in 1981 the debt would have been reduced by 15%....so 85% remains

rite

let's say X0 represents the debt in 1980

oh my you lost me

all right

so, what would be the debt in 1981?

i was just having variables stand in for the amounts

would it be the same as 1980?

the company reduces its debt by 15% each year

so minus 15% each year?

so it'd be less than the year before

right, -15% per year

but another way to consider this would be that 85% of the amount remains from before

37999.85

is that the answer?

as the final answer? or just what would be the total debt in 1981?

total debt in 1981

no, how did you get that?

i minused 15% the debt from 1980

what value did you obtain for 15% of 320,000?

319,999.85

15% of 320,00 would be: 320,000*.15 = 48,000

320,000 - 48,000 = debt in 1981

why multiply?

where did you get 48,000??

.15 * 320,000

you lost me. im sorry im horrible at math

you need to determine what 15% of the debt in 1980 is. the value if $320,000

are you familiar with percentages?

yes

cool, so in this case, you need to first determine what 15% of 320,000.

thats how you got 48,000?

yeah. 15% is actually the decimal .15

i know

yeah, cool, so you just multiply the decimal form with the debt

so debt in 1981 would be debt in 1980 - 15% of the debt in 1980

so it would be 15% minus 7 years?

not quite

so here, I want to type out a general plan for how to solve this then step through it with you

ugh. okay so i would minus .15 every year with each new debt?

right

or
debt in 1981 = debt in 1980 * .85

okay i dont want to do it that way the .85

its confusing

all right, that would give you less work however...less multiplying and subtracting ;)

but that is the general set up

i rather the long way so i dont get lost in the middle,

sure, no problem

yeah once you get it that way, i bet you can find the simpler way

so we did 1981?

do you think you can try to solve it?

yes

cool, i'll check it for you if you'd like

oh please give me 10min.

sure

okay i lost myself.

heh, just concentrate on find the debt of one year at a time

so how far did you get?

ok. we can step through this. what is the debt in 1980: 320,000. what is the debt in 1981?

i did and it keeps going down to 47999 and only going down after the decimal

we said 480000 before

that would be 272000

correct

no

heh, what's up?

you wold minus .15 from 272000??

thats what i meant

cool, then you got it

i got 271999.85

so debt in 1982 is 272,000 - (15% * 272,000)...drum roll, which is?

you simply subtracted .15 from 272,000

you need to multiply then subtract

ugh okay

when i multiply i get 40800

ok. now subtract that from 272,000

272,000 - 40,800 is the debt in 1982

231200

ok so now for 1983

multiply 231200 * .15

nice
then subtract

196520

solid, and repeat for 1984...

seems like you got It, right?

1984 is 225998

yes

hey, sorry, did you get the rest?