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Joni and Edgar go shopping. She buys 3 baseballs and 2 baseball bat for 90 dollars. Edgar buys 5 baseballs and 2 bats for 116 dollars. How much does a baseball bat cost?

 Mar 22, 2021
 #1
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3x  + 2y   = 90

5x  + 2y  =  116             subtract  the  first equation from the second

 

2x  =  26

x = 26 /  2   =  13  (dollars) =  cost of a  baseball

 

3 (13)  +  2y  = 90

39  + 2y  =  90

2 y  =  90  -  39

2y  =  51

y = 51/2  =   25.50   =  cost of a  bat in dollars

 

 

cool cool cool

 Mar 22, 2021

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