Question

The regular price of a child's entry ticket to a water park is $6 less than that for an adult's. The park offers half off all entry tickets during the off-peak season. The Sandlers paid a total of $78 for 1 adult ticket and 2 child's tickets to the water park during the off-peak season. 78 = one-half x + (x − 6) What is the regular price of a child's ticket?

Answer 1

c=a-6
0.5(a + 2c) = 78
0.5(a + a -6)=78
0.5(2a-6)=78
a-3=78
a=81

c=a-6
c=81-6
c=75