John walks to a viewpoint and returns to the starting point by his car and thus takes a total time of 8 hours 40 minutes. He would have gained 2 hours by driving both ways. How long would it have taken for him to walk both ways.	Choose the correct choice from the following options
A) 8 h 40 min  B) 10 h 40 min  C) 9 h 40 min  D) 11 h 45 min  E) 8 h 25 min
1.Walking to to a viewpoint+Driving back=8 hours 40 minutes   2.Driving to a viewpoint+Driving back=8 hours 40 minutes - 2 hours=6 hours 40 minutes, thereforeone way driving=6 hours 40 minutes/2 =3 hours 20 minutes.   3. From 1.one way driving=8 hours 40 minutes-3 hours 20 minutes=5 hours 20 minutes.   4.Walking to to a viewpoint+Walking back=5 hours 20 minutes+5 hours 20 minutes=10 hours 40 minutes.   Answer: 10 h 40 min
<result>B</result>
John walks to a viewpoint and returns to the starting point by his car and thus takes a total time of 8 hours 40 minutes. He would have gained 2 hours by driving both ways. How long would it have taken for him to walk both ways.