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Seventy concert tickets are sold for 550$.Each adult ticket cost 9$ and each children’s ticket cost 5$.Find the number of adult tickets and the number of children’s tickets sold

 Jan 20, 2020
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# adult = x                     Amount from adult tix = 9x

# children = 70 - x         Amount                     = 5 (70-x)

    added together , the amounts sum to $550

9x     +   5(70-x)         = 550                             solve for 'x' the number of adult tix, then #child tix = 70 -x

 Jan 20, 2020

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