Question

Question #650f6

Answer 1

In two hours Uncle travelled 40 miles more than Bobo in the same two hours. But Bobo was only `2//3` of the way after two hours.

Explanation:

So the 40 miles difference represents the last `1//3` of the distance (for Bobo).

Conclusion : The distance`=3xx40=120mi`

Check your answer!
Bobo's speed: `120mi//3h=40mi//h`
Uncle's speed: `120mi//2h=60mi//h`
And the difference is indeed `20mi//h`