part 2!!!!!!!!!!!!!!!

Answer:
Down below,
Step-by-step explanation:
First the 2nd question,
In 3 hours, Jamal hiked 6 miles, while Rubi hiked 7.5 miles. For a ratio, you could do 2.5:2 as Rubi hiked 2.5miles an hour while Jamal hiked 2 miles an hour.
For the 3rd question,
Rubi had a greater speed as he walked .5 miles an hour faster, as shown in the ratio above.
Hope i could help you, i would appreciate if you gave me brainliest, have a good day