algebra help please!!!

Question

At the city museum, child admission is $5.30 and adult admission is 9.40. On Sunday, four times as many adult tickets as child tickets were sold, for a total sales of $858.00. How many child tickets were sold that day?

Answer 1

 

X = Child tickets sold

4X = adult tickets sold

 

5.30X + 9.40(4X) = 858.00

 

5.3X + 37.6X = 858

 

42.9X = 858

 

X = 20

 

20 Child tickets were sold that day  (80 Adult tickets were sold)