Question
A man takes 5 hours 45 min. in walking
to a certain place and riding back. He would have gained 2 hours by
riding both ways. The time he would take to walk both ways is :
Answer: Option A
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Let the distance be x km. Then,
(time taken to walk x km) + (Time taken to ride x km) = 23/4 hrs.
⇔ (Time taken to walk 2x km) + (Tie taken to ride 2x km) = 23/2 hrs.
But, time taken to ride 2x km = 15/4 hrs.
∴ Time taken to walk 2x km [23/2 - 15/4] hrs = 31/4 hrs = 7 hrs 45 min.
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