Question
One adult ticket and seven children's tickets cost $62. Two adult tickets and eight children's tickets cost $79. How much does one adult ticket cost? How much does one children's ticket cost?
Answers
PsyDAG
a + 7c = 62
2a + 8c = 79
Multiply first equation by 2 and then subtract the second equation from it.
2a + 8c = 79
Multiply first equation by 2 and then subtract the second equation from it.