human
3 lions and 2 rhinos escape from the zoo. If it takes 2 hours to recover each animal how long did the zoo spend recovering animals?
assistant
How many animals did the zoo have to recover? ** They had to recover 3+2=<<3+2=5>>5 animals
How long did the zoo spend recovering animals? ** So it took 5*2=<<5*2=10>>10 hours to recover everyone
#### 10