Answer:
cost of each bag of popcorn = $7
and cost of each drink = $6.75
Step-by-step explanation:
given data
Mason spends a total = $69.75
drink = 9 drinks
bag = 1
Cooper spends a total = $68.25
drink = 3 drinks
bag = 7
solution
we consider here
cost of each bag of popcorn = x
and cost of each drink = y
so we can write equation as
9x + 1y = 69.75 ..........................1
3x + 7y = 68.25 ..........................2
we will Solving the system of equation and we get
x = $7
y = $6.75
so cost of each bag of popcorn = $7
and cost of each drink = $6.75