What other information do you need to prove triangle dac=bca by asa

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?