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2007-10-05 06:14:14 · 4 answers · asked by will p 1 in Science & Mathematics Mathematics

4 answers

OK - Let's see what we can do

30 + (.0825 x 30) + (15% x 30) = ?; first simplify
30 + (2.475) + (4.5) = ? ; now add
36.975

So the answer is 36.975

OK? 15% is the same as 15/100 which is the same as .15

Hope this helps you.

2007-10-05 06:20:28 · answer #1 · answered by pyz01 7 · 1 0

What is the problem you are having? Is it converting 15% to decimal form so you can work the problem?

Look the simple way to convert a percentage to a decimal is more the decimal point over 2 places to the left and drop the percent sign.

15% = .15
next you do all the operation inside the paranthesis first.

30+ ( .0825 x 30) + ( .15 x 30) =?

.0825
x 30
--------
2.475

30 + (2.475) + (.15 x 30) = ?

.15
x30
-----
4.50

30+(2.475) + (4.50) =?
now use the associative rules to drop the paranthesis

30 + 2.475 + 4.50 =?
now simply add.

36.975
now round off to two decimal places since .15 is only two decimal places so two decimal places is the highest degree of accuratary you can get.

36.98 is your answer:

Now rule for when you are rounding off. if the number is 5 like in 36.975 and the place you are rounding back to is an odd number like in this case 7, then round up to make it an even number like 8. If the number is an even number do not round up.

2007-10-05 06:55:42 · answer #2 · answered by JUAN FRAN$$$ 7 · 0 1

i did this on a calculator...a very very very smart calculator at that.

i got 59.25

but i don't know how to show you, sorry.

good luck.

2007-10-05 06:23:22 · answer #3 · answered by i lick the sauce off of tacos 1 · 0 0

36.975

2007-10-05 06:22:49 · answer #4 · answered by Helen B 5 · 0 0

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