Please refer to the programme called local global which I provided the interface for. write code for the calculate button to do the following:-
• capture the three prices from the 3 Tedits.
• add them together and display in the proper Tedit.
• calculate 15% VAT display the results in the proper Tedit.
• add that to the total and display the final total.
capture the amount tendered.
• determine and display the change ​

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