Answer:
206.625
Step-by-step explanation:
400 meters
50 + 200 + 150 = 400
72 adult tickets were sold and 114 child tickets were sold.
x+y=186, 14x=10y=2148
x=186-y
14(186-y)+10y=2148
2604-14y+10y=2148
2604-4y=2148
-4y=-456
y=144
x=186-144 : x=72
