at the movie theater chid admission is 5.70 and adult admission is 9.90 on Sunday 154 tickets were sold for a total sales price of 1125.60 how many child tickets were sold that day

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Answer:

94 Child tickets were sold.

Step-by-step explanation:

Let x represent child tickets

Let y represent adult tickets

Cost Equation: 5.70x + 9.75y = 1306.10

Quantity Equation: x + y = 173

Multiply the Quantity Equation by -5.70

     5.70x + 9.75y = 1306.10

   -5.70x  - 5.70y = -986.10

                   4.05y = 320.00

                 ÷4.05   ÷4.05    

                          y =   79

x +  y  = 173

x + 79 = 173

x         = 94

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