A,B started from a house A travelling with speed of 20kmph B travelling with a speed of 40kmph. Both started at 10:00AM and A reached a T junction at 12:00 PM and A turned left where as B reached it before and turned right what is distance between A&B at 2:00

• A and B is 40km apart T bcz a reached at T in 2 hours hence distance =20*2=40km
  since the speed of b is 40 km/hr. hence it reaches to T at 11am and then turned right.
  distance covered by A from T at 12pm to 2 pm (2 hours)=2*20=40km
  distance covered by B from T at 11pm to 2 pm (3 hours)=3*40=120km
  distance bt A and B= 40+120 =160km=ans
• 11 years agoHelpfull: Yes(61) No(1)
• ans 160km
• 11 years agoHelpfull: Yes(6) No(0)
• d=speed of a*time taken by a to reach t junction=20*(12:00-10:00)=20*2=40km
  now, d=speed of b*time taken by b to reach t junction
  40km=40kmph*t
  t=1 hour
  A reaches t junction at 12 p.m and B reaches T junction at 11:00 a.m
  in 2hours, a travels dist=20*2=40km
  in 3hrs, b travels dist=40*3=120km
  as they are moving in opp direction, both the above distances are added
  here distanec between them=120+40=160 km
• 11 years agoHelpfull: Yes(4) No(0)
• A and B start by 10:00am.
  A = 20km/hr. => at 12:00 he will reach 40km.
  (which inturn implies that the T junction is 40 km from the starting pt.)
  therefore B should have reached it before 2 hrs.
  B turns right and totally travels 80km in 2 hrs.
  At 2:00 (i.e after 2 hrs) A would have travelled 20+20 to the left of the T-junction. B would have travelled 40+40+40(including the 1st 2hrs along the T)
  So the distance between A and B at 2:00 is (20+20)+(40+40+40) = 160km.
• 11 years agoHelpfull: Yes(3) No(0)
• at the junction T B will reaches upto 11 am and A will reaches 12 pm. after 11 am b will travel 120 km from t in right direction upto 2 pm and A will cover the 40 km after 12 pm in left direction .hence the total distance will be 160 kms.
• 11 years agoHelpfull: Yes(3) No(0)
• ans is 160 km ...
• 11 years agoHelpfull: Yes(2) No(1)
• 160km ---> 40*3=120 km and 20*2=40 km. so total dist = 120+40=160 km.
• 11 years agoHelpfull: Yes(0) No(0)
• 160ANS(20+20+40+40+40)
• 11 years agoHelpfull: Yes(0) No(1)
• Answer is 160 !!!
• 11 years agoHelpfull: Yes(0) No(0)