I'm really not sure about the top and bottom answer but I know i can help you with 10. Anyways, to figure this out you just need to know how many minutes are in 5/6 of an hour than multiply that many minutes by 5, I think i'll let you figure this out. :)
(Answer is 250 minutes if you don't want to figure it out)
Answer and Step-by-step explanation:

Step 1: Add -3x to both sides


Step 2: Divide both sides by 2.


Answer:
6 km is 3.6 mi
Step-by-step explanation:
0.6 × 6 = 3.6