when a number is decreased by 10% of itself, the result is 171. what is the number?

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02-12-2016
Mathematics

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when a number is decreased by 10% of itself, the result is 171. what is the number?

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bartdrinksmalk bartdrinksmalk · Answer 1 · 2016-12-02T19:16:28+01:00

bartdrinksmalk bartdrinksmalk

02-12-2016

For some number [tex]x[/tex], we subtract [tex]0.1x[/tex] and get 171.

So we have:
[tex]x-0.1x=171[/tex]
[tex]\rightarrow 0.9x=171[/tex]
[tex]\rightarrow x=190[/tex]

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