Two people A and B starts running at 10:00 AM towards north at a speed of 40Kmph and 60Kmph respectively. After 2 hours(12:00 noon ), A turned left and B turned right. They stopped at 2:00 PM.Find the distance between A and B at 2:00 PM.
Answer:3200

• make the fig and apply pythaguras theorem... sqrt(200^2 - 40^2)
  answer 203.96 or 204
  
• 12 years agoHelpfull: Yes(20) No(3)
• i think answer is 240km
• 12 years agoHelpfull: Yes(19) No(5)
• N
  W E
  S
  AFTER 2 HR the co ordinate of A(0,80)
  B(0,120)
  FURTHER after two hr the co ordinate will be A(-80,80)
  B(120,120)
  SO distence =sqrt((120+80)^2+(120-80)^2)
  
• 12 years agoHelpfull: Yes(16) No(3)
• ans is 240
  a in 2 hrs 80
  b in 2 hrs 120
  diff is 40 ........(1)
  after 12 pm
  a 2hrs 80 and b 120 in opp dir so diff=120+80=200...(2)
  from 1 and 2
  ((200)^2+(40)^2)^1/2=240 ans
  
• 12 years agoHelpfull: Yes(7) No(2)
• i hav thinked on it a lot bt everytym my ans is coming 204....plzz somody xplain hw it comes 3200
  
• 12 years agoHelpfull: Yes(6) No(3)
• behen ans is 203.9...not 3200! huh!
  
• 12 years agoHelpfull: Yes(6) No(1)
• answear is 204 ans
  
• 12 years agoHelpfull: Yes(5) No(1)
• right ans is 203.93
  using pytha.. (200^2+40^2)^1/2=203.93
• 12 years agoHelpfull: Yes(2) No(0)
• after 2 hours(12.00)
  a will traveled 80kms while B wil travel 120kms
  after dat a turned left n b right
  after 2 hours(2:00 pm)
  a again travel 80kms and b vil travel 120kms
  
  so distance between a and b
  |-------120-------b
  |40
  |
  a-----80-------*
  
  using pythogoras theoram
  dist b/w a and b = 205km
  plz smeone xplain how it comes 3200
• 12 years agoHelpfull: Yes(1) No(3)
• 203.96 km (approx).
• 12 years agoHelpfull: Yes(1) No(1)
• 240 is the perfect answer
  
• 12 years agoHelpfull: Yes(1) No(0)