# How do you do percentages?

im having trouble with these. Please try not to link me to another website that shows how to do it (but thats OK if you do), just explain in an easy way. any help is appreciated. Thanx!

### 10 Answers

- 1 decade agoFavorite Answer
Per cent means "out of 100"

ie 15% means 15 out of 100

This can be written as a fraction, 15/100

It can also be written as a decimal (15 divided by 100 on your calculator if needed is 0.15)

7% means 7 out of 100

This can be written as a fraction 7/100

It can also be written as a decimal (7 divided by 100 on your calculator if needed is 0.07)

If you want to find a percentage of something

eg 30% of 80

First write 30% as a fraction, 30/100

Then change it into a decimal (use calculator if you need to - 30 divided by 100 = 0.30)

Then multiply this by 80

ie 0.30 x 80

gives an answer of 24.

Another example 8% of 40

8% = 8/100 = 0.08

0.08 x 40 = 3.2

Good luck.

- 1 decade ago
Percentages is just a ratio of one thing to another, then multiplied by 100.

Can you give some specifics? Your question is a bit vague.

I think of percentages as a normalized ratio. 1/4 = 25%, 3 out of 4 = 75%

1 divided by 4 = .25 multiplied by 100.

3 divided by 4 = .75 multiplied by 100.

A trucker going up a 100 foot hill over the horizontal distance of 1000 feet is going up a 10% grade (which is steep).

100/1000 * 100 = .1 *100 = 10%

I hope this helps.

- Wile E.Lv 71 decade ago
A percentage is the ratio of one quantity or value to another. It is a fraction, or proportion. To find the percentage of one thing to another, just divide the one thing by the other. That will give you the decimal form. To find the percentage, just multiply by 100 or move the decimal point two places to the right.

For instance, say you want to find the percentage (%) of boys and girls in a class.There are 50 students in the class. There are 28 boys. First divide the no. of boys by the total:

28 / 50, or

0.56

To get the percentage, move the decimal point two places to the right:

0.56 = 56%

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- 1 decade ago
suppose you got 68 out of 75 if you want to check the percentage then

divide 68 from 75 like this (68/75) then multiply with 100 so you will get the percentage 90.6666666

- 1 decade ago
suppose:

you have 150 eggs in your basket. you broke 25 eggs. find the percentage....

how do you find it? listen carefully:

you have 150 eggs and u broke 25 of them.

if you HAD 100 eggs, what would be its equivalent?

(100 * 25) / 150 = 16

it means, you broke 16 percent of your total eggs.

- 6 years ago
this will surely solves user percentage problem :) remember me in your prayers