Respuesta :

Let the number of adult tickets sold be x

and the number of child tickets sold be y

Given:

Cost of tickets for adults = $15

Cost of tickets for children = $7

Total number of tickets sold = 253

Total receipts = $ 2771

Solution

The sum of the number of adults and child tickets is:

[tex]x\text{ + y = 253}[/tex]

The receipt for adults :

[tex]=\text{ 15x }[/tex]

The receipts for children:

[tex]=\text{ 7y}[/tex]

The sum of the receipts for adults and children is the total receipts:

[tex]15x\text{ + 7y = 2771}[/tex]

Solving the equations simultaneously, we can obtain x and y:

[tex]\begin{gathered} x\text{ + y = 253} \\ 15x\text{ + 7y = 2771} \end{gathered}[/tex]

The values of x and y after solving simultaneously are :

[tex]\begin{gathered} x\text{ = 125} \\ y\text{ = 128} \end{gathered}[/tex]

Answer: The number of adults tickets = 125

The number of child tickets = 128

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