In covering distance,the speed of A & B are in the ratio of 3:4.A takes 30min more than B to reach the destion.The time taken by A to reach the destinstion is.

• ans:2hrs
  s=d/t
  speed A:B::3:4
  let the distance be x
  A's time: t+30=x/3
  B's time: t=x/4
  therefore, t+30/t=(x/3)/(x/4)
  (t+30)3=4t
  t=90m=3/2h
  Therefore time taken by A=30min+3/2h=1/2+3/2=2hrs.
• 11 years agoHelpfull: Yes(1) No(0)
• ratio of speed=3:4
  so,the ratio of time will be=4:3
  now, let time taken by A and B are 4x and 3x respectively.
  given A then 30/60hr more the B
  4x-3x=30/40 or x=1/2
  time taken by A is 4*1/2=2hr
• 9 years agoHelpfull: Yes(0) No(0)