allstartylerosyuih allstartylerosyuih

12-07-2017
Mathematics

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At the city museum, child admission is $5.20 and adult admission is $9.90. On Wednesday, three times as many Adult tickets to child tickets were sold, for a total sales of $767.80. How many child tickets were sold that day

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Brainless32 Brainless32

12-07-2017

Child=x
Adult=y
y=3x
5.2x+9.9y=767.8
5.2x+9.9(3x)=767.8
5.2x+29.7x=767.8
34.9x=767.8
x=22

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