+0  
 
-3
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avatar+76 

help pls...

 Jun 22, 2019
 #1
avatar+76 
-3

Sorry, I ask 2 many questions...

 Jun 22, 2019
 #2
avatar+111438 
+1

Let x be the "feel good" hours

 

Then 8- x  must be the "tired" hours

 

And   

 

rate in  feel good hrs * feel good hrs  + rate in tired hrs * tired hrs  = total distance

 

20 * x  +    12 * (8 - x)  = 122     simplify

 

20x  + 96  - 12x  =  122

 

8x + 96  = 122     subtract 96 from both sides

 

8x  =  26       divide both sides by 8

 

x  = 26/8  =  13 / 4  hrs   of  "feel good"....LOL!!!

 

 

cool cool cool

 Jun 22, 2019

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