question_answer

Distance covered by M in 3 hours 15 minutes is 77 kilometres and distance covered by N in 2 hours 20 minutes is 77 kilometres. Find the difference of times taken by M and N to cover the same distance.

A)  56 minutes                   

B)  55 minutes

C)  54 minutes                   

D)  1 hour 10 minutesv

E)  None of these