ANSWER:
The average price of a movie ticket in 20 years will be $14.3.
SOLUTION:
Given, the average price of a movie ticket in 20 years will be at least $6 less than seven thirds of today’s average ticket price.
The current average price of $8.70.
Let, the average price of a movie ticket in 20 years be x.
According to the given information,
Average price of a movie ticket in 20 years =
today average ticket price – 6

= 20.3 – 6
= 14.3
Hence, the average price of a movie ticket in 20 years will be $14.3.