Question

Alex went to the store to buy supplies for peanut butter and jelly sandwiches for his birthday party. He bought bread for $3.29 for each loaf, peanut butter for $2.99 per jar and jars of jelly. The total cost was $23.64. If Alex bought three of each item, what was the cost of one jar of jelly?

1. Define the variable. =
2. Equation to be solved =
3. One jar of jelly cost =

Answer 1

Define the variable: The variable is the cost of one jar of jelly

Equation to be solved: Refer to Step by Step

One jar of jelly cost: 1.60

Explanation:

total bread cost: 9.87

total peanut butter cost: 8.97

total jelly cost: x

so 23.64 - (9.87 + 8.97) = x

simplified: 23.64 - 18.84 = x

even more simplified: 4.80 = x

so 3 jars of jelly is 4.80

so divide

4.80 divided by 3 = 1.6

so one jar of jelly costs 1.6