A boat can ferry 1500 passengers across a river in 12 hrs. How many round trips does it make during the journey? i. The boat can carry 400 passengers at a time ii. During its journey, the boat takes 40 mins time each way and 20 mins waiting time at each end.

• total time taken for the whole journey=40min + 40min + 20min + 20min=2hours
  in 1st trip,boat carries 400 passengers & time taken=2hrs
  2nd trip,it carries 400 passengers again & time taken=2hrs
  3rd trip,it carries 400 passengers again & time taken=2hrs
  4th trip,it carries 300 passengers again & time taken=2hrs
  total time=8hours
  total trips=4
• 12 years agoHelpfull: Yes(48) No(9)
• First Trip
  Persons=400
  Travel+waiting(2ndend) time=40+20
  Second Trip
  Persons=400 (400+400)
  Travel+ Waiting(Home) time=40+20
  Third Trip
  Persons=400(400+400+400)
  Travel+Waiting(2ndend)=40+20
  Fourth Trip
  Persons=300(400+400+400+300)
  Travel=40
  
  So Finally It Takes 4 Trips
  
• 12 years agoHelpfull: Yes(5) No(3)
• 4 trips
  for 400 passengers it takes 2 hrs for up and down
  so for 1500 it takes 4 round trips
• 12 years agoHelpfull: Yes(4) No(6)