Question

A man takes 4 hours and 30 minutes to walk to a certain place and ride back. He would have saved 3 hours by riding both ways. The time he would take to walk both ways is

A. 8 hrs 45 min
B. 7 hrs 30 min
C. 8 hrs 15 min
D. 7 hrs 15 min
E. 6 hrs 30 min