Question

I walk a certain distance and ride back taking a total time of 37 minutes. I could walk both ways in 55 minutes. How long would it take me to ride both ways?

Answer 1

Let the distance be x km. Then, 

(Time taken to walk x km) + (time taken to ride x km) =37 min. 

(Time taken to walk 2x km ) + ( time taken to ride 2x km )= 74 min.  

But, the time taken to walk 2x km = 55 min. 

Time taken to ride 2x km = (74-55)min =19 min