An express train travelled at an average speed of 100 km/hr, stopping for 3 minutes after every 75 km. How long did it take to reach its destination 600 km from the starting point?
A. 6 hrs 21 min B. 6 hrs 24 min
C. 6 hrs 27 min D. 6 hrs 30 min

• A. 6 hrs 21 min
  
  No of stops = (600/75) -1 = 7
  Time taken for stops = 3*7 = 21 mins
  Time taken to travel distance of 600 kms = 600/100 = 6 hrs
  
  Total time taken = 6 hrs +21 mins = 6 hrs 21 mins
• 13 years agoHelpfull: Yes(17) No(5)
• ans 6hrs 21 min
  time taken to travel 600 km at 100 km/hr =6hrs
  no of stops for every 75 km =600/75 -1 =7
  time =7*3=21 min
  total time taken to travel =6 hrs+21 min=6hrs 21 min
• 10 years agoHelpfull: Yes(1) No(1)
• A)6hr 21 min
• 10 years agoHelpfull: Yes(0) No(0)
• Ans:6 hrs 21 min
  for 1hr 100k,
  So 6hr for 600k,
  8*75=600.....but at 8th 75k it will reaches 600k so elimnate 8th 75k
  now total 7 75k so, 7*3=21
  Total 6hr 21 min
  
  
• 10 years agoHelpfull: Yes(0) No(0)