Ticket cost of local basketball game is $7.50 and
Cost of souvenir is $2.50.
Solution:
First convert given statements into algebraic expression.
Let x be the cost price of local basketball game and y be the cost price of souvenirs.
Given Mr. Smith bought 2 basket ball game ticket and 1 souvenir for $17.25
⇒ 2x + y = 17.25
To equal this expression subtract 2x on both sides, we get
⇒ y = 17.25 – 2x – – – – (1)
Mr. Lockhart bought 5 basket ball game ticket and 2 souvenirs for $42.00
⇒ 5x + 2y = 42.00 – – – – (2)
Substitute equation (1) in equation (2)
⇒ 5x + 2(17.25 – 2x) = 42.00
⇒ 5x + 34.50 – 4x = 42.00
Combining like terms together.
⇒ 5x – 4x = 42.00 – 34.50
⇒ x = 7.50
Now, substitute x = 7.50 in (1), we get
⇒ y = 17.25 – 2(7.50)
⇒ y = 17.50 – 15
⇒ y = 2.50
Hence, ticket cost of local basketball game is $7.50 and
cost of souvenir is $2.50.