Originally Posted by

**mollymcf2009** Ok, see if this helps you. Sorry I took so long, I'm doing homework and this.

Sometimes I make a table to get all my data down. I can't really do that here but I'll try to line things up the best I can. *The data for each interest rate is listed from left to right. Hope this is understandable:

This is a layout of the I = Prt equation I gave you earlier:

__Interest Rate__ ----------__Interest earned__ ------- ---------- __Principal__ --------------- __rate__ ------- __time__

8% --------------------------.08x ------------------------- x----------------- .08 ---------- 1 year

12% --------------------($2500-x)(.12) --------------- $2500-x ------------.12 -------------1 year

Do you understand how I set this table up? I decided to find the amount for the 8% chunk first. So, I know that .08x is going to be the interest that THIS amount of money will make at this interest rate. The principal is that unknown amount of money (x). .08 is the rate etc.

Since I have to have an exact answer for one of the rates before I can find the other, 12% chunk of money will depend on whatever 8%'s chunk is.

So I set up my equation to find this, directly from the table:

.08x = ($2500-x)(.12)

.08x = 300 - .12x

.08x + .12x = 300

.2x = 300

x = $1500 This is how much was invested at 8%

Now, you should be able to find out how much was invested at 12%.

**The amount of interest isn't really important and the question isn't asking for that, but you could find it if you needed to.

Good now? Come back if you're still stuck and we can try something else.

**If you ever get stuck on a problem like this or any other kind of problem first write down all of the information the problem gives you. Word problems add unnecessary words that get people confused. If you can just take the information out that you need, it can usually make a seemingly difficult problem much easier.

Good luck!!