4 of 4 At a carnival, Jeremy gets on at the bottom of a large Ferris wheel, and Deborah gets on at the bottom of a small Ferris wheel. Both start moving at the same time. If the large one makes one revolution in 60 seconds and the small one makes one revolution in 20 seconds, how many seconds will pass before Jeremy and Deborah are both at the bottom again? 20 seconds 30 seconds O 60 seconds 120 seconds