You code is still rotten with errors.
One more time: You changed all of the getElements to name'Ticket' without changing the corresponding input names/ids.
If you used Number() as I advised then 2+3 comes to 5, not 23 which is two string values concatenated. I don't think that the code you posted here is the same code as you are using to test.
To multiply the number of tickets by price simply do
var Adult = Number(document.getElementById('adultTicket').value) || 0;
var aduitprice = 10.50; // (no $ sign!!)
var adultcost = Adult * adultprice;
If desired add a $ sign to the total at the end before displaying the result.