Directions: Study the information given below carefully and answer the questions that follow:

There are two friends Misty and Shristy both of them started walking from O in different directions. Misty walked 10km from O towards the south and reached P. From P walked for 6km towards the west and reached Q. Then walked for 18km towards the north and reached R. She walked 12km towards the east and reached her final destination S.

Shristy walked 15km from O towards the east and reached L. From L she walked another 20km in the south direction and reached M, Then she walked 7km towards the west and reached her final destination N.