princessariannapecor princessariannapecor
  • 04-04-2020
  • Mathematics
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The number 66 is increased to 72. What is the percentage by which the number was increased, to the nearest tenth of a percent?

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igoroleshko156
igoroleshko156 igoroleshko156
  • 04-04-2020

Answer:

The increase is 9.1%

Step-by-step explanation:

Step 1:  Make an equation

[tex]66 * x = 72[/tex]

[tex]66x = 72[/tex]

Step 2:  Divide both sides by 66

[tex]66x / 66 = 72 / 66[/tex]

[tex]x = 1.09090[/tex]

Step 3:  Find the increased

[tex]1 - 1.09090[/tex]

[tex]0.091 * 100[/tex]

9.1%

Answer:  The increase is 9.1%

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