Eric decides to go to the park. He runs for 20 minutes, then jogs for 10 minutes to reach the park. When he returns, he takes a different route home and this takes him 3 times as long as his trip there. How long does it take Eric to return home?
Eric’s trip to the park took 20 minutes running + 10 minutes jogging = <<20+10=30>>30 minutes.
So his return trip took 30 minutes * 3 = <<30*3=90>>90 minutes.
#### 90