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At the movie theatre, child admission is $5.10 and adult admission is $9.00 .  On Wensday, twice as many adults tickets as child tickets were for a total of $831.60.  How many child tickets were sold that day?

 Jul 14, 2020
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Let x be the number of child tickets sold and 2x the number of adult tickets sold.

 

We form an equation for the total money:

 

5.1x+9(2x)=831.6

5.1x+18x=831.6

23.1x=831.6

x=36 child tickets

 Jul 14, 2020

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