# percent of number

• Mar 10th 2008, 06:45 PM
mathsnoob
percent of number
How would I work out 6% of 131?
• Mar 10th 2008, 06:47 PM
integrator10101
6% is simply 6/100

Multiply 6/100 by 131/1.

You get 786/100. Now, reduce and you have your answer.
• Mar 10th 2008, 06:51 PM
mathsnoob
I got 0.0786
Is this right?
• Mar 10th 2008, 07:01 PM
integrator10101
You're off by a couple of decimal points.

You should get 7.86.
• Mar 10th 2008, 07:02 PM
mathsnoob
How did you get that?
I'm awful at percentages!
• Mar 10th 2008, 07:12 PM
integrator10101
Look:

6/100 * 131/1.

Multiply the top 131 * 6 = 786
Multiply the bottom 100 * 1 = 100

Now you have 786/100

How many times does 100 go into 786? 7

100 * 7 = 700

786 - 700 = 86.

Therefore 86 is what goes behind the decimal point.
• Mar 26th 2008, 08:29 AM
nikconsult
• Mar 26th 2008, 09:02 AM
topsquark
Quote:

Originally Posted by nikconsult

You left out the 7. It's 7.86.

-Dan
• Mar 27th 2008, 06:40 AM
Stone Cold
When dividing by 10, 100, 1000 ... etc

You move the decimal place by the number of zeros.

786. -- In your case we need to move the decimal point to the left because were dividing (you move it to the right, when multiplying)

So when dividing by 100 we would move the decimal place over to the left 2 times.

7.86

If we divided by 10

78.6

by 1000

0.786

by 10,000

0.0786 -- If we multiply 0.0786 by 100,000 the decimal place moves to the right 5 times

7860. or just 7860

Hope this helps.
• Apr 1st 2008, 01:20 AM
Simplicity
Quote:

Originally Posted by mathsnoob
How would I work out 6% of 131?

$\displaystyle 6\% = \frac{6}{100} = 0.06$

$\displaystyle 0.06 \times 131 = 7.86$
• Apr 7th 2008, 07:59 AM
h.mckenzie
what is the % of $68.00 and .30 is being taken off Quote: Originally Posted by mathsnoob How did you get that? I'm awful at percentages! what is the precent of$68.00 when the precent is .30%
• Apr 7th 2008, 08:01 AM
h.mckenzie
what is the % of $68. and 30% is being taken off • Apr 7th 2008, 08:02 AM Moo Hello, Is it .30% or 30% ? One will be 30/10000, the other will be 30/100 X% of Y is always X*Y/100 This means here that it's 68*30%=68*30/100=20.40$