Sarah the Sub is the worst substitute teacher. She just can’t seem to get her students under control. But she is getting better...Last year Sarah got tied up & hung upside down by students 89 times. This year it only happened 74 times. What was the percent decrease in the number of times Sarah was tied up & hung upside down?Round to the nearest percent.
A).16% C)18%
B).17% D).19%