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Mathematics 15 Online
lilcutie2:

@az how do I found the amount borrowed

AZ:

Can you post the question?

lilcutie2:

you already have it

lilcutie2:

@AZ number 6

AZ:

Ah okay, so amount borrowed is just the initial amount A = P * (1 + rt) this one is going to be a few more steps first, what is the rate? and what is the time?

lilcutie2:

rate is 12% and time is 3 years

AZ:

good so can you convert the rate into a decimal?

lilcutie2:

1.2

AZ:

12 % percent is out of 100 12 / 100 =

lilcutie2:

.12

AZ:

there you go so now we have A = P * (1 + rt) A = P * (1 + (0.12 * 3)) what is 0.12 * 3

lilcutie2:

.36

AZ:

now add 1 to it

lilcutie2:

1.36

AZ:

okay so now we have A = P * 1.36 so we want to find out the value of P, which is the amount borrowed. Remember what I've been telling you about A? A is the final amount that is the amount borrowed + interest how much interest is there? it's the number all the way at the end in the last column

lilcutie2:

$342

lilcutie2:

is the interest rate

AZ:

so A = 1.36 P And we just said that A is the Principle amount + interest A = P + 342 so we can replace that into the main equation P + 342 = 1.36*P

AZ:

does that make sense?

lilcutie2:

so divide

AZ:

so first we have to get P all by itself so let's take P and move it to the other side what is 1.36P - P

lilcutie2:

idk

AZ:

so P is the same thing as 1P so basically 1.36 - 1 and just don't forget about the P

lilcutie2:

.36

AZ:

good now we have P + 342 = 1.36*P 342 = 0.36 * P now can you solve for P? we're multiply P with 0.36 to move 0.36 to the other side and get P all by itself, we have to do the opposite of multiplication what is the opposite of multiplication? and can you do that on both sides to 0.36

lilcutie2:

divide

AZ:

yes so divide 0.36

lilcutie2:

by what

AZ:

342 = 0.36 * P we have to divide 0.36 on both sides

AZ:

that way then we'll get P all by itself and that's our final answer

AZ:

so 342 / 0.36 =

AZ:

|dw:1614782778096:dw|

lilcutie2:

I got it

AZ:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @lilcutie2 I got it \(\color{#0cbb34}{\text{End of Quote}}\) Good to hear :)

lilcutie2:

950

lilcutie2:

@az

AZ:

That's your answer

lilcutie2:

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