+0  
 
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89
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if an item has a start mass of 92.0 grams and an end mass of 86.6 grams what is the percentage of change in mass

also if an item has a starting mass of 89.3 grams and an end mass of 94.4 grams what is the percentage of change in mass

DarkCalculis  Sep 5, 2018
 #1
avatar+91027 
+2

% change  =   [   ( New Mass - Old Mass ) / (Old Mass ) * 100 ] %

 

So...for the first one we have

 

 [   ( 86.6 - 92.0 ) / 92.0   *   100  ] %  =   [ - 5.4 / 92  * 100 ] %  ≈ [ -5.87] %    (decrease )

 

 

Second one

 

[  (94.4 - 89.3 )  / 89.3   * 100 ] %  =  [ 5.1 / 89.3  * 100 ] %  ≈   [5.71 ]%    (increase)

 

 

 

cool cool cool

CPhill  Sep 5, 2018

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