Answer:
Pierce ran/walked 7/4 or (1 3/4) miles more on wednesday than on tuesday
Explanation:
so on tuesday he ran :
3/4 + 3/4 miles which = 6/4 miles
on wednesday he ran and walked:
2/4 + 11/4 = 13/4 miles
so to find out how many miles more find the difference between them:
13/4 - 6/4 = 7/4 ( 1 3/4 )