Math 141: PRACTICE TEST # 1: Chapter 1 KEY
700 adult tickets Let x = # of children tickets; y = # of adult tickets ( x + y = 2200 (number of tickets) and 1.5x + 4y = 5050 (money). Multiply the 1st equation by -1.5 and add the two equations ( 2.5y = 1750 ( y = 700. Substitute 1500 for y in the original 1st equation ( x + 700 = 2200 ( … ................
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