Answer
Stadtlohn and Olfen
Work Step by Step
The percentages indicated in the red-shaded portion of the pie graphs indicate the percentage of rats resistant to both warfarin and bromadiolone.
In Stadtlohn, 87 percent of the rat population were resistant to both warfarin
and bromadiolone. In Olfen, about 58 percent of the rats were resistant to both poisons. Both 87 and 58 percent represent a majority of the rat populations in Stadtlohn and Olfen, respectively.
