1/8 bc If you take 2 hours and divide it by 8 you get 25
The answer is no. Because solution (a,b) means x=a, y=b.and we have a-b=5. And (b,a) would mean x=b and y=a but then x-y=b-a=-(a-b)=-5≠5. So the pair (b,a) is not a solution.
I think the second i didnt make it on paper but its the one that more convence me
