Question

Mia is making a batch of chocolate chip cookies. The recipe requires 2 cups of flour. However, she only has 1 cup of flour at home. Mia decides to go to the store to buy more flour. She finds a sale where a bag of flour costs $3.50. After buying the flour, Mia also realizes that she needs to buy parchment paper, which costs $2.25 per roll. If Mia spends a total of $10.25, how many rolls of parchment paper did she buy?

Answer 1

Answer:  3

Work Shown

x = number of rolls of parchment paper

2.25x = cost of just the parchment paper only

2.25x+3.50 = cost after adding on bag of flour

2.25x+3.50 = 10.25 is the equation to solve

2.25x = 10.25-3.50

2.25x = 6.75

x = 6.75/2.25

x = 3

Mia bought 3 rolls of parchment paper.

Doing so means she spends 2.25*3 = 6.75 dollars on those rolls of paper alone (ignoring the flour). When including the flour, the cost increases to 6.75+3.50 = 10.25 to confirm that we have the correct answer.