A man takes 5 hours 45 min in walking a certain distance and riding ba
| A man takes 5 hours 45 min in walking a certain distance and riding back. He would have gained 2 hours by riding both ways. Find the time he would take to walk both ways.
A. 3 hrs 45 min
B. 7 hr 45 min
C. 12 hrs 12 min
D. 6 hrs 45 min
Right Answer is: B
SOLUTION
Let the distance be x km.
Then ( time taken to walk x km ) + ( time taken to ride be x km ) = 
hrs
⇒ ( time taken to walk 2x km ) + ( time taken to ride be 2x km )= 
hrs
But time taken to ride 2x km = 
hrs
∴ time taken to walk 2x km = 
hrs = 
hrs = 7 hrs 45 min
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A man takes 5 hours 45 min in walking a certain distance and riding ba