Answer :

iloveonedirection
well bill runs 10 miles in 4 days
multiply 2 3/5 by 4 to get the distance val runs 
val runs 10.4 miles

val runs farther in 4 days
Dannymal
2, 3/5 x 4
13/5 x 4/1 = 52/5 = 10, 2/5 = 10.4 mile = Val

10 miles ONCE every 4 days so
10.4 > 10
So Val walks more than Bill