Anitha takes 8 hours 20 mints in walking to a temple and riding back. She would have gained 3 hours by riding both ways. The time she would take to walk both ways is:
Correct Option is: D Let the distance be x km. then,
(time taken to walk x km)+(time taken to ride x km) = 25/3 hrs
(time taken to walk 3x km)+(time taken to ride 3x km) = 25/3*3 =25hrs
But the time taken to ride 3xkm=(25/3 – 3)hrs
=(25 – 9)/3 hrs
=16/3 hrs
Time taken to walk 3x km = (25 – 16/3)hrs
=(75 – 16)/3
=59/3
=19 hours 40 mins