Question

a circus charges $2.50 for kids tickets and $6 for adult tickets last week and twice as many kids attended the circus than adults. if the ticket sales totaled 7,150. how many kids attended the circus

Answer 1

Let
x-----------> the number of kids
y----------> the number of adults

we know that
2.5x+6y=$7150---------> equation 1
x=2y-------------> equation 2
substitute 2 in 1
2.5*[2y]+6y=7150-----> 5y+6y=7150----> 11y=7150-----> y=650
x=2y----> x=2*650----> 1300

the answer is
the number of kids is 1300