You can solve this problem by using the following rule of three: 42 s ----> 0.5 DVD x ----> 1 DVD Clearing x: x = (1 / 0.5) * (42) x = 84 s (time to complete a DVD) Then, we have the following conversion: 1min = 60s So: x = (84/60) x = 1.4 min The rate is then: rate = 1 / 1.4 = 0.71 DVD / minute Answer: Jaytree's "ripping rate" in DVDs per minute is 0.71 DVD / minute
