Struture of Expressions

Question

Jackson buys tickets for two concerts. The tickets for the concert featuring the local artist are $25 each. The tickets for the concert featuring the international artist are $75. Jackson buys a total of 20 tickets.

Let x be the number of tickets Jackson buys for the concert featuring the local artist. Write an unsimplified expression for the total cost of the local and international tickets.

Answer 1

c= 25x +75y

x+y=20

y=20-x = number of international tickets

c= 25x + 75(20-x)

= 1,500 - 50x = total cost

x= number of local tickets