Final answer:
The unit price of one jar of jam, when 5 jars are sold for $4.50, is calculated by dividing the total cost by the number of jars, resulting in a unit price of $0.90 per jar.
Step-by-step explanation:
To calculate the unit price of the jars of jam, we need to divide the total cost by the number of jars. The grocery store sells 5 jars of jam for $4.50. Therefore, the unit price is calculated as follows:
- Total cost for 5 jars of jam = $4.50
- Number of jars = 5
- Unit price = Total cost / Number of jars
- Unit price = $4.50 / 5
- Unit price = $0.90 per jar
So, the unit price for one jar of jam is $0.90.