human
Tony loved to solve difficult pen and paper puzzles. He did a warm-up puzzle that only took 10 minutes and after that he did 2 puzzles that each took 3 times as long. How long did he spend solving puzzles?
assistant
How long did each of the long puzzles take? ** Each of the long puzzles took 3*10=<<3*10=30>>30 minutes to solve
How long did he spend solving the long puzzles? ** So he spent 30*2=<<30*2=60>>60 minutes solving them
How long did he spend solving puzzles? ** That means he spent 60+10=<<60+10=70>>70 minutes solving puzzles
#### 70