Answer:
One gallon of milk costs $3.64
One bottle of water costs $2.54
One bag of chips costs $0.79
Step-by-step explanation:
m represent gallons of milk
w represents bottles of water
c represents snack-size bags of chips
t = total bill
t = m + w + c ... eq 1
t = $33.60
but
w = 2c
m = 1.90 + w
m = 1.9 + 2c
Slot in the values in eq 1
33.60 = (1.9 + 2c ) + 2c + c
33.60 = 1.9 + 5c
33.60 - 1.9 = 5c
31.7 = 5c
c = $6.34
Slot in the value of c in w and m
w = 2c
w = 2(6.34)
w = $12.68
m = 1.9 + 2c
m = 1.9 + 2(6.34)
m = $14.58
4 gallons of milk cost $14.58
Therefore, one gallon if milk costs = 14.58/4 = $3.64
5 bottles of water cost $12.68
Therefore, one bottle of water costs = 12.68/5 = $2.54
8 bags of chips = $6.34
Therefore, one bag of chips cost = 6.34/8 = $0.79
