Q: 136 (IAS/1997)

P is 300 km eastward of O and Q is 400 km north of O. R is exactly in the middle of Q and P. The distance between Q and R is
question_subject: 
Maths
question_year: 
1997
question_exam: 
IAS
question_sub_subject: 
Mathematics
question_topic: 
Mathematics
stats: 
0,160,104,160,32,24,48