Respuesta :

Answer:

532 student tickets were sold

Step-by-step explanation:

Let x be the no. of student's tickets sold

Let y be the no. of non student's tickets sold

We are given that 817 tickets were sold in total

So, [tex]x+y = 817[/tex]  --1

Cost of 1 student's ticket = $2

So, Cost of x student's ticket = 2x

Cost of 1 non - student's ticket = $3

Cost of y non - student's ticket = 3y

We are given that  817 tickets were sold, for a total of $1919

So, [tex]2x+3y = 1919[/tex]  ---2

Solving 1 and 2

Substitute the value of y from 1 in 2

[tex]2x+3(817-x) = 1919[/tex]

[tex]2x+2451-3x = 1919[/tex]

[tex]2451-1919=x[/tex]

[tex]532=x[/tex]

Substitute the value of x in 1

[tex]532+y = 817[/tex]

[tex]y = 817-532[/tex]

[tex]y = 285[/tex]

Hence 532 student tickets were sold