human
Jack decides to visit a museum 150 miles from home. He drives 75 mph there and back. He spends 6 hours at the museum. How long is he gone from home?
assistant
How many miles did Jack drive? ** He drove a total of 150+150=<<150+150=300>>300 miles
How many hours did Jack drive? ** So he drove for 300/75=<<300/75=4>>4 hours
How long was Jack gone from home? ** That means he was gone from home for 4+6=<<4+6=10>>10 hours
#### 10