some one plz help what is 6 reduced by 20%???

- anonymous

some one plz help what is 6 reduced by 20%???

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- anonymous

when some one speaks of percentage, what number are they referring to?

- anonymous

6

- anonymous

no, a percent refers to 100

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- anonymous

you have to give 100%

- anonymous

no my question ask The photo lab for the Cary News reduces each side of a photograph by 20%. The original size of the photo is 6 inches by 9 inches. What are the dimensions of the reduced photo?

- anonymous

I understand your question. But you first have to understand what a percentage is to answer the question

- anonymous

Take a dollar bill. It is 100 pennies, right?
So how much is 20%

- anonymous

i dont know im sorry i am not good with percents :(

- anonymous

if one dollar is 100 pennies, then 100% of one dollar is 100 pennies.
Do you follow that?

- anonymous

yes

- anonymous

So the key to understanding this problem, or any problem with percentages is to know that percent refers to 100

- anonymous

So if you take 20% from 100% how much is left?

- anonymous

80

- anonymous

Great

- anonymous

Know, how do we write out one dollar?

- anonymous

1.00

- anonymous

that 1 is 100%

- anonymous

oooh ok i kinda understand now

- anonymous

if we took one penny away we would have 99 cents
0.99

- anonymous

So how would you write 80%

- anonymous

0.80

- anonymous

Yes, good job

- anonymous

So now you are ready to do the problem

- anonymous

ok

- anonymous

now you have 6 and you want to take 20% away.
So, you can multiply by 80%

- anonymous

ok 5.80??

- anonymous

Multiply 6 * 80% like you wrote it

- anonymous

No, not quite. You subtracted .20 cents not 20%

- anonymous

4.8

- anonymous

Yes, great job

- anonymous

Now do the same for the 9

- anonymous

multiply it by 80??

- anonymous

80%

- anonymous

7.2

- anonymous

yes, good job

- anonymous

so you now have your two new dimentions

- anonymous

thank you i never understood how to do percent problems thank you :)

- anonymous

k bye gtg thx again :)

- anonymous

:)

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