Percent of turn pike is 75% and percent of parkway is 25%.
Solution:
Given, The state of New Jersey makes approximately $1.55 billion annually from tolls of the $1.55 billion
About 
 comes from tolls on the turnpike
 comes from tolls on the turnpike 
Remaining 
 comes from tolls on the parkway
 comes from tolls on the parkway 
To find the percent of the total revenue from turnpike:

To find the percent of the total revenue from parkway:

Summarizing the results:
Percent of turn pike is 75% 
Percent of parkway is 25%