Janine used the calculations shown to determine how much she would spend on 245 pencils. What's her error?

Janine wrote the rate incorrectly. Using the following rule of three:
The correct rate would be:
[tex]\frac{72}{1}=\frac{\text{?}}{3600}[/tex]The unit price would be $0.02 , not $0.20. Thereby, she would spend $4.90 , not $69