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Sarah's bowling score was 40 points more than Greg's, and the average of their two scores was 102. What was Sarah's score? (Recall that the average of two numbers is their sum divided by 2.)

 Nov 15, 2020
 #1
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I need help fast!

 Nov 15, 2020
 #2
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Call Sarah's score, S

The Greg's score = S - 40

 

So....we have  that    [ Sarah's score + Gref's score ]  /  2  =  102

 

[ S +  S - 40  ]  /2  = 102      multiply both sides by 2

 

2S - 40 = 204      add 40 ro  both sides

 

2S  = 244         divide  both sides by 2

 

S =  122  = Sarah's score

 

 

cool cool cool

 Nov 15, 2020

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