A girl goes to her office for work which is 50 miles. She goes to her office few distance by bicycle and remaining by train. The speed of bicycle is 15 mph and that of train is twice of bicycle. If she spend 20 min. more on bicycle, then total time taken by her from going to office from her home?

• Let time travelled in train is x min then in cycle (x+20) min.
  (30/60)x + (15/60)(x + 20) = 50 or x = 60
  Total time taken 60 + (60 + 20) = 2 hr 20 min
• 9 years agoHelpfull: Yes(32) No(4)
• Ans is 2 hours and 20 minutes
  it can be solved by hit and trial
  take 1 hour for train it travels 30mile in 1 hour
  in 1 hour bicycle travel 15 mile remaining 5 miles travelled by bicycle in 20 minutes which is condition in statement.so assumption is true.
• 9 years agoHelpfull: Yes(7) No(2)
• answer 2h 20 minutes 15*(t+20/60)+30*t=50 solving we get t=1 hour
  then the total time is 1h 20 journey due to bicycle +1 hr journey on train=2h 20 min
• 9 years agoHelpfull: Yes(4) No(0)
• speed of train = 2×15 = 30mph
  time for train = x
  time for cycle = x + (20/60)
  distance = speed×time
  50 = 30x + 15( x ×20/3 )
  so, x = 1 hr
  so total distance = x + x × 20
  = 2 hr 20 min
• 6 years agoHelpfull: Yes(3) No(0)
• 15*(t+1%3) + 30*t =50
  t = 1hr
  total time = t + t +20 = 2 hr 20 min.
• 9 years agoHelpfull: Yes(1) No(0)
• 1 hr 50 min
  
• 9 years agoHelpfull: Yes(0) No(0)
• mph refers to meter per hour ?
  or miles per hour?
• 9 years agoHelpfull: Yes(0) No(0)
• its miles per hour
  
• 9 years agoHelpfull: Yes(0) No(0)
• the girl spends 20 min on bycle so distance travelled according to given is 5 miles
  and remaining are 45 miles that she travelled by train
  speed of train is 30 mph so ti takes 1.5 hours to reach destination
  so total time is
  i.e 1 hr 30min+ 20 min= 1 hr 50 min
  its the final answer
• 8 years agoHelpfull: Yes(0) No(0)
• 2hr 20min
  
  
• 7 years agoHelpfull: Yes(0) No(0)