Answer:
Price of advance ticket: 15$
Price of same-day ticket: $40
Step-by-step explanation:
Let [tex]y[/tex] be the price of one advance ticket and [tex]x[/tex] the cost of one same day ticket.
We know that the combined cost of one advance ticket and one same-day ticket is $55, so
[tex]y+x=55[/tex] equation (1)
We also know that 20 advance tickets and 35 same-day tickets cost $1700, so
[tex]20y+35x=1700[/tex] equation (2)
Now, let's solve our system of equations step-by-step:
step 1. Solve for [tex]x[/tex] in equation (1)
[tex]y+x=55[/tex]
[tex]x=55-y[/tex] equation (3)
step 2. Replace equation (3) in equation (2)
[tex]20y+35x=1700[/tex]
[tex]20y+35(55-y)=1700[/tex]
[tex]20y+1925-35y=1700[/tex]
[tex]-15y=-225[/tex]
[tex]y=\frac{-255}{-15}[/tex]
[tex]y=15[/tex] equation (4)
step 3. Replace equation (4) in equation (3)
[tex]x=55-y[/tex]
[tex]x=55-15[/tex]
[tex]x=40[/tex]
We can conclude that the price of one advance ticket is $15 and the price of one same-day ticket is $40.