at the same point at 7am. A starts moving towards east with speed 25km/hr and B towards south with speed 30km/hr..at what time they meet 130 meter apart??

• very easy method u can apply in this type of question easly but don,t ask the explanatio.if all the given no in km then there is no need to convert otherwise convert it
  case 1 if the no like 25km/hr,30km/hr,130km
  (25x)^2+(30x)^2=(130)^2
  1525 x^2=16900
  x^2=11.081967
  x=3.329hr
  cae 2 if the no like 25km/hr,30km/hr,130m then covert km/hr into m/s by multiplyiny the no by 5/18 i.e 25*5/18.solve like the case 1 method
  after finding the value of x add with the given time we get ur answer.
  
• 9 years agoHelpfull: Yes(7) No(4)
• we cannot find angles in exam is there any alternative solution
• 9 years agoHelpfull: Yes(4) No(0)
• A moves 25 km in 1 hr and B moves 30 km in 1 hr
  then draw a right angled traingle by taking 25 and 30 as a side in the east and the south direction respectively like
  
  |
  |
  ______________25_____e
  |
  30 |
  s
  find the two angle
  tan s=25/30
  s=39.8 deg
  and angle e=50.2
  then make another right angled traingle with one side given that is hypo=130
  and find the another two side by using
  cos 39.8=side in the s direction(s1) /130
  s1=99.87
  sin 39.8=s2/130
  s2=83.2
  it means after travelling A 83.2 km and B 99.87 km they make a apart of 130 km
  A travells 25km in 1 hr means 60 min
  then 83.2 km in83.2/25=3 hr 33 min
  so they wlii make apart of 130 in 7hr 3 hr 33min=10hr 33 min am
• 9 years agoHelpfull: Yes(2) No(3)
• it is 130meter, not 130km.. so the answer will be 7:00;11am
• 9 years agoHelpfull: Yes(2) No(0)
• @ neeraj its given that 130 meter apart not 130 km
• 9 years agoHelpfull: Yes(1) No(0)
• @neeraj
  Ashish and Rahul started walking from same point E. Ashish walked at the speed of 15 kmph to the east, and Rahul walked 25 kmph to south, at what time they meet 10 miles apart?
• 9 years agoHelpfull: Yes(1) No(1)
• answer is 10.33am
• 9 years agoHelpfull: Yes(0) No(1)
• plzz explain clearly..@neeraj
• 9 years agoHelpfull: Yes(0) No(0)
• @parmar change it yaar
  1km=1000m
  1km/hr=5/18 m/s
  1m/s=18/5 km/hr
  and if want the solution then read my solution one again.
• 9 years agoHelpfull: Yes(0) No(1)