A drunkard is walking along a straight road. He takes 5 steps forward and 3 steps backward and so on. Each step is 1 m long and takes 1 s. There is a pit on the road 11 m away from the starting point. The drunkard will fall into the pit after

A21 s
B29 s
C31 s
D37 s.

  • -3
C31 s............
  • -5
this is wrong i think....../////.
  • -7
What are you looking for?