Final answer:
To determine the cost of five bags of chips, calculate the unit price by dividing the cost of three bags ($4.50) by three.
Multiply the unit price ($1.50 per bag) by five to get the total cost for five bags, which is $7.50.
Step-by-step explanation:
The question is asking for the cost of buying five bags of chips given that three bags cost $4.50.
To find the unit price (cost per bag of chips), we divide the total cost by the number of bags:
Unit price = Total cost / Number of bags
= $4.50 / 3
= $1.50 per bag
Now, to find out how much five bags of chips will cost:
Total cost for 5 bags = Unit price × Number of bags
= $1.50 × 5
= $7.50
So, it will cost John $7.50 to buy five bags of chips.