what is fraction for decimal .151515 (the 15 keeps on going)

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nicknation
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what is fraction for decimal .151515 (the 15 keeps on going)

Postby nicknation » Wed Apr 01, 2009 10:47 pm

I would like to know what the fraction is for the decimal .151515 (the 15 keeps on going )?

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Martingale
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Re: what is fraction for decimal .151515 (the 15 keeps on going)

Postby Martingale » Wed Apr 01, 2009 11:50 pm

nicknation wrote:I would like to know what the fraction is for the decimal .151515 (the 15 keeps on going )?


let x=.1515...

then 100x=15.1515...

subtract x from 100x


100x=15.1515...
- x=.1515...

99x=15
x=15/99

nicknation
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Re: what is fraction for decimal .151515 (the 15 keeps on going)

Postby nicknation » Sat Apr 04, 2009 5:36 pm

how did you know to times by 100?

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Re: what is fraction for decimal .151515 (the 15 keeps on going)

Postby Martingale » Sat Apr 04, 2009 5:37 pm

nicknation wrote:how did you know to times by 100?


because there are two digits that are repeating

nicknation
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Re: what is fraction for decimal .151515 (the 15 keeps on going)

Postby nicknation » Tue Apr 07, 2009 4:49 pm

so use 100 for 0.345345345...?

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Re: what is fraction for decimal .151515 (the 15 keeps on going)

Postby Martingale » Tue Apr 07, 2009 6:21 pm

nicknation wrote:so use 100 for 0.345345345...?



there are 3 digits repeating here...use 1000

nicknation
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Re: what is fraction for decimal .151515 (the 15 keeps on going)

Postby nicknation » Tue Apr 07, 2009 6:39 pm

sry thats what i ment thnx


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