John walks to a viewpoint and returns to the starting point by his car and thus takes a total time of 10 hours 40 minutes. He would have gained 4 hours by driving both ways. How long would it have taken for him to walk both ways.	Select the correct option: A) 15 h 15 min B) 11 h 10 min C) 14 h 40 min D) 10 h 10 min E) 9 h 45 min
1.Walking to to a viewpoint+Driving back=10 hours 40 minutes   2.Driving to a viewpoint+Driving back=10 hours 40 minutes - 4 hours=6 hours 40 minutes, thereforeone way driving=6 hours 40 minutes/2 =3 hours 20 minutes.   3. From 1.one way driving=10 hours 40 minutes-3 hours 20 minutes=7 hours 20 minutes.   4.Walking to to a viewpoint+Walking back=7 hours 20 minutes+7hours 20 minutes=14 hours 40 minutes.   Answer: 14 h 40 min
<result>C</result>
John walks to a viewpoint and returns to the starting point by his car and thus takes a total time of 10 hours 40 minutes. He would have gained 4 hours by driving both ways. How long would it have taken for him to walk both ways.