Answer:
The kids is 5.50 adult is 7..50
Explanation:
we create an equation
2x + 3y =31.50
and
1x + 5y=35.00
1x is just x so we subtract 5y from both sides
x= 35.00-5y
fill x with 35.00-5y
2(35.00 - 5y) + 3y = 31.50
70.00 - 10y +3y = 31.50
-10y + 3y = -38.50
-7y=-38.50
-7y/-7= -38.50/-7
y=5.50