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Jen Butler has been pricing Speed-Pass train fares for a group trip to New York. Three adults and four children must pay $\$106$. Two adults and three children must pay $\$75$. Find the price of the adult's ticket and the price of a child's ticket.

 Mar 15, 2021
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3a + 4c =106

2a + 3c = 75   multiply this eq by - 1.5 abd add to top equation to get :

     -.5 c = -6.5

          c = $ 13       

 

2a + 3(13) = 75

a = $ 18

 Mar 15, 2021

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