To find the value of that percentage, put a dot in front of the first number. If there is only one number in the percentage, for example 5%, you have to write it as .05

If there are two numbers, as you have in 15%, you write it as .15

Then you multiply that by the number you are trying to find the percentage of. In this case, you will multiply $3,000 by .15

The number is actually 3000.00 (because it is money you are dealing with, there are dollars and cents involved. And when you are doing the multiplication, you need to have all the appropriate spaces accounted for.

So — multiply 3000.00 by .15

Now add up the decimal spaces you have (the number of spaces after the decimal point) which, in this case, is four. So you count four spaces from the LEFT hand side of the number and put your decimal point in there.

That will tell you what 15% of $3000 is, and you can judge for yourself whether you would rather have that or the $425.

Just as a quick check – you know that 10% of $3000 is $300 (you can do this math in your head) and half of $300 is 150, so when you add them together you will have a way of double checking your math.

3000 * 15% = Your commission. It equals out to 450.

450 > 425.

I do not have to justify the fact that I would take the commission. Note that there is a decimal point in front of the 15.