For a Saturday matinee, adult tickets cost $7.50 and kids under 12 pay
1 answer:
<span> let x = # of adult tickets
sold, thus the # of children tickets
= 70-x</span>
<span> 7.5x + 5(70-x) = 450</span>
<span> ^ 7.5x + 350 -5x = 450</span>
<span> ^ 2.5x = 450-350= 100</span>
<span> x = 40 adults
tickets thus
70—40 = 30 children tickets</span>
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