SOLUTION: Julie and her 2 friends got to the movies. Julie must bring along her kid sister. Julie and her 2 friends but adult tickets and her sister buys a kid ticket. The kid ticket is 3/4

Question 905649: Julie and her 2 friends got to the movies. Julie must bring along her kid sister. Julie and her 2 friends but adult tickets and her sister buys a kid ticket. The kid ticket is 3/4 the cost of and adult ticket. There total was $22.50. How much was each adult ticket?
Answer by rm29924(97) (Show Source): You can put this solution on YOUR website!
Let X = the price of an adult ticket
since the kid ticket is 3/4 the cost of an adult ticket and 3/4=.75
Let .75X = the price of a kid ticket
there are 3 adults that bought tickets so
3X + .75X = 22.50
combine the like terms
3.75X = 22.50
divide 3.75 from both sides to get the variable X by itself
X = 6
so a kid ticket is .75(6)=4.50
check your answer:
3(6) + .75(6) = 22.50
18 + 4.50 = 22.50
22.50 = 22.50
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