browny2213 browny2213
  • 21-04-2014
  • Mathematics
Answered

translate question into an equation, let x be unknown number 6.4 is 90% of what number?



Answer :

Dannymal
Dannymal Dannymal
  • 21-04-2014
6.4 = 90% x X
X =?
Happy to Help!
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Lilith
Lilith Lilith
  • 21-04-2014
[tex]1 \% = \frac{1}{100}\\ \\90 \% * x =6.4 \\ \\\frac{90}{100}x=6.4 \\ \\\frac{9 }{10 }x=6.4 \ \ *(\frac{10}{9})\\ \\x= 6.4 *\frac{10}{9}\\ \\x=\frac{64}{9}\\ \\x = 7\frac{1}{9}[/tex]
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