ll23v5a233 ll23v5a233
  • 23-10-2019
  • Mathematics
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if 200%of a number is 90 then what is 80% of that number? ​

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carlosego
carlosego carlosego
  • 05-11-2019

For this case we propose a rule of three:

90 ----------> 200%

x ------------> 80%

Where the variable "x" represents the unknown number.

[tex]x = \frac {80 * 90} {200}\\x = \frac {7200} {200}\\x = 36[/tex]

So, we have the unknown number is 36.

Answer:

The unknown number is 36.

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