Answer:
Here, x represents the umber of food tickets sold and y represents the number of ride tickets sold.
Given the system of equations:
....[1]
....[2]
Substitute the equation [2] into [1] we have;
Using distributive property,
Combine like terms;
Add 20 to both sides we have;
Divide both sides by 7 we have;
y = 180
Substitute this in [2] we have;
therefore, each type of ticket were sold are:
the number of food tickets sold is, 350 and the number of ride tickets sold is, 180