Tickets to the movie costs $9.50 for adults and $6.50 for kids. A large group bought 12 tickets for $87. How many kids tickets did they buy? help

x= number of adults

y= number of children

Total comercials

1.00 x + 1.00 y = 92.00 1

Total value

9.50 x + 7.75 y = 837.25 2

Eliminate y

multiply (1)by -7.75

Multiply (2) by 1.00

-7.75 x -7.75 y = -713.00

9.50 x + 7.75 y = 837.25

Add the two equations

1.75 x = 124.25

/ 1.75

x = 71.00

plug value of x in (1)

1.00 x + 1.00 y = 92.00

71.00 + y = 92.00

y = 92.00 -71.00

y = 21.00

y = 21.00

x= 71 number of adults

y= 21 number of children

irrational, cannot