Leo weighs 10 pounds of dog food at the pet store. The scale mistakenly lists the bag at 11.5 pounds

percent error = 15%

Step-by-step explanation:

The following question is missing: What is the percent error?

percent error = (measure error / actual weight) * 100

where:

measure error = incorrect weight - correct weight = 11.5 - 10 = 1.5 pounds

percent error = (1.5/10) * 100 = 15%