The graph below represents the speeds of kael and lynn as they run around a track.
a graph titled the running track. the horizontal axis shows time (minutes) and the vertical axis shows speed (m p h). two lines begin at 0 speed in 0 minutes. the line labeled lynn goes to 3 m p h in 8 minutes, to 12 m p h from 13 to 28 minutes, to 0 m p h in 40 minutes. the line labeled kael goes to 10 m p h from 12 to 20 minutes, to 2 m p h in 32 minutes, to 0 m p h in 40 minutes.
for how many minutes did lynn run at a greater speed than kael?
12
17
23
28