Answer:
Step-by-step explanation:
The two rules are :-
15 - 10(n - 1)
25 - 10n
18.9/29 or 65.17% of the coal.
3/29 x 6.3 = 18.9/29
18.9/29 = 0.6517 x 100 = 65.17
31.25 minutes
12.5 minutes divided by 2 (miles) = 1 mile per 6.25 minutes
6.25 x 5 = 31.25