SOLUTION: A family purchased 7 tickets for a train ride. The total cost was $27. If adult tickets were $5, and children's tickets were $3, find the number of each type of ticket purchased.

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Question 19986: A family purchased 7 tickets for a train ride. The total cost was $27. If adult tickets were $5, and children's tickets were $3, find the number of each type of ticket purchased.
Answer by Paul(988)   (Show Source): You can put this solution on YOUR website!
Let x be the adults tickets
Let y be the childern tickets
x+y=7
y=7-x
5(x)+3(y)=27 (substitute)
5x+3(7-x)=27
5x+21-3x=27
2x+21-21=27-21
2x=6

x=3
7-3=4
Therefore there were 3 adults ticket purchased and 4 childer tickets purchased.

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