$24.25
Explanation:
Given:
Amount given by parents = $50
So, $50 can be considered as income.
Following are the expenses:
Cost of ticket for adult = $7.25
Cost of ticket for children = $4.25
Cost of ticket of 2 siblings = 4.25 × 2 = $8.5
Cost of Soda and Popcorn = $10
Total expenses = 7.25 + 8.5 + 10 = $25.75
Amount left after expenses = Income - expenses
= $50 - 25.75
= $24.25