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?  Choose the correct choice from the following answers
A) 20mins  B) 19mins  C) 5mins  D) 4mins  E) 12mins
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)= 
<gadget id="calculator">(74-55)</gadget>
<output>19</output>
19 min.   Ans: 19mins
<result>B</result>
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?