The total cost of your trip to the movie theater is $43.50.
The total cost will be the sum of money spent on ticket and soda and popcorn.
Ticket cost for or cost price of Ticket for:
     5 years old brother = $4.25
     Grandparents = $6.00 × 2 = $ 12.00
      For self= $7.25
Total cost of tickets = $4.25 + $ 12.00 + $ 7.25
                 = $ 23.50
Total Money spent = Cost of ticket + cost of soda and popcorn
                = $ 23.50 + $20
                = $ 43.50
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