Solution:
The total cost will be the sum of money spent on tickets and on soda and popcorn.
Ticket cost for:
5 year old brother = $4.25.
Grandparents = 2x($6.00)=$12.00
Myself=$7.25.
Total cost of tickets= $4.25+$12.00+$7.25=$23.50
Total money spent= Cost of ticket + cost of soda popcorn= $23.50+$20=$43.50
Total money spent=$43.50.