Q- two points r there two person from A running to same direction with speed 20 km/hr & 15/hr respectively and from other end another person running to opposite direction with 30 km/hr? distance bw them 100 km??at what time they will meet?

• 20-15=5
  5+30=35
  now s=35km/hr,d=100km,T=?
  s=d/t => t=100/38
  =20/7 hr
  
• 11 years agoHelpfull: Yes(40) No(9)
• avg speet of 20 and 15 is =120/7 km/h
  let they will meet after time t.
  t=100*7/120 -100/30
  solvin t=2.5 hour
  
• 11 years agoHelpfull: Yes(9) No(23)
• ans is 2 hr
  speed will be add so 30+20=50km/hr
  and then st=d
  t=d/s
  t=100/50=2 hr
  
• 11 years agoHelpfull: Yes(7) No(31)
• let they meat after x hrs
  than distance covered by A is x*20 km
  distance covered by B is x*30km
  total distance = 20x+30x
  50x=100
  x=2 hrs
• 11 years agoHelpfull: Yes(5) No(7)