How SmaRT are You::The Famous Fly Puzzle

Replies

• 

  Kaustubh Katdare

  In one hour with a speed of 15 mph, the fly should cover a total distance of 15 x 1 = 15 miles. ☕
• 

  Anoop Kumar

  what if fly speed is 25mph😉
• 

  Kaustubh Katdare

  ianoop

  what if fly speed is 25mph😉

  I'm not putting any more thought into this. Am I overlooking anything obvious? 😁
• 

  da_joker

  Big_K is right here....
  The slow way to find the answer is to calculate what distance the fly covers on the first,
  northbound, leg of the trip, then on the second, southbound, leg, then on the third, etc., etc., and,
  finally, to sum the infinite series so obtained. The quick way is to observe that the bicycles meet......
  exactly one hour after their start, so that the fly had just an hour for his travels; the answer must therefore be 15 miles.
  
• 

  akash.kasina

  i

  da_joker

  Big_K is right here....
  The slow way to find the answer is to calculate what distance the fly covers on the first,
  northbound, leg of the trip, then on the second, southbound, leg, then on the third, etc., etc., and,
  finally, to sum the infinite series so obtained. The quick way is to observe that the bicycles meet......
  exactly one hour after their start, so that the fly had just an hour for his travels; the answer must therefore be 15 miles.
  

  i tried by summing all the terms in the infinite series and ended up in total confusion and some decimal value,good thinking dude!👍
• 

  Kaustubh Katdare

  Yeah, used to happen to me all the time. We try to solve the easier problems the tougher way. Try this: #-Link-Snipped-#
• 

  Sindhu Chowdary

  ya its very simple logic............it is 15miles.............and if the fly sped is 25mph then the ans is 25 miles..........👍
• 

  Anoop Kumar

  Nope..if speed would be 25mph, then number of round taken by fly will be infinite.😀
  since fly speed(25) > *bicycle relative speed (20).
• 

  Sindhu Chowdary

  ianoop

  Nope..if speed would be 25mph, then number of round taken by fly will be infinite.😀
  since fly speed(25) > train relative speed (20).

  it means if the speed of the fly is 30mph then also the rounds taken by it will be infinte??????
  i am not able to understand the logic in your answer..........plz explain it...........
• 

  Dilip jain

  ianoop

  Nope..if speed would be 25mph, then number of round taken by fly will be infinite.😀
  since fly speed(25) > *bicycle relative speed (20).

  itz not infinite.....it is the speed .........coz the fly just flies as long as the bicycles meet
• 

  Anoop Kumar

  Dilip jain

  itz not infinite.....it is the speed .........coz the fly just flies as long as the bicycles meet

  I think you are right... had solved this type of question long ago.. didn't remembered the process.
  but definitely number of round will be infinite.
• 

  Dilip jain

  hmm......i'll get back to u soonnnnn
• 

  Sindhu Chowdary

  Dilip jain

  itz not infinite.....it is the speed .........coz the fly just flies as long as the bicycles meet

  i agree with u.....
• 

  Dilip jain

  gwendollen

  i agree with u.....

  guys .........i can bet on it .....it is not "infinite"
• 

  Vassilya

  There is no way that I can see for an infinite loop unless the fly was superman and actually flew fast enough to turn back time...25 miles per hour for an hour would be 25 miles covered, excepting some really off the wall physics like surface curvature creating a difference between the distance flown and the actual distance of ground between marked axis of pivotal points.
• 

  da_joker

  guys it is not infinite....remember dey just have 1 hour to move..try to some the series together....u probably get 15.....
• 

  da_joker

  👍👍.......
  😐
• 

  Vassilya

  Yeye, we've established the answer, we're debating variations now 😀
• 

  da_joker

  👍👍...