Answer:
Movie admission:
In 1955 the price was $0.75 and in 2011 the price was $9.50
then we must solve $9.50/$0.75 = 12.67
where I already rounded it to the nearest hundredth.
Then, in 2011 the price was 12.67 times bigger than the one in 1955.
Regular popcorn:
In 1955 the price was $0.25 and in 2011 the price was $4.25
then: $4.25/$0.25 = 17
The price in 2011 was 17 bigger than in 1955
Drink:
in 1955 the price was $0.35 and in 2011 the price was $2.75
then: $2.75/$0.35 = 7.86
The price in 2011 was 7.86 times bigger than in 1955.
