I agree with this person that will be a good use
C; 120 because 24x=360 so x=15. Then ABC is 8x, so 8*15=120.
30 - 18 = 12
So he has 12 miles left for this week.
There are 3 more days
So 12 divided by 3
Which is 4, so he needs 3 more hours per day for the remaining 3 days