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On the first day of a music concert, the price of 12 adult tickets and 4 child tickets is 84$. The second day the concert made 78$ by selling 6 adult tickets and 14 child tickets. Find the price of an adult ticket and the price of an child ticket.

 Feb 12, 2020

Best Answer 

 #1
avatar+22108 
+2

Total tix sold =   12 + 4 + 6 + 14 = 36

 

 

12 A + 4 C    = $ 84

 6 A   + 14 C = $ 78      multiply THIS equation by -2

-12 A  - 28 C = - 156    and add to the first equation

         - 24 C =  -72

                 C = 3               Now you should be able to find A ...the price of Adult tix.....(sub the value of A into oneof the eqautions)

 Feb 12, 2020
 #1
avatar+22108 
+2
Best Answer

Total tix sold =   12 + 4 + 6 + 14 = 36

 

 

12 A + 4 C    = $ 84

 6 A   + 14 C = $ 78      multiply THIS equation by -2

-12 A  - 28 C = - 156    and add to the first equation

         - 24 C =  -72

                 C = 3               Now you should be able to find A ...the price of Adult tix.....(sub the value of A into oneof the eqautions)

ElectricPavlov Feb 12, 2020

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