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 CTS  |  Question 32 of 86    Print  
13) Some of the friends decided to go on a picnic they decided to go on a
bike if the biker decided to take one pillion with him then there is no
means of travel for the people as equal to the no of bike + 1. if they
decided to go on two trip three bike r left unused in the second trip find
the no of person having bike?


  
Total Answers and Comments: 1 Last Update: June 25, 2006     Asked by: danie 
  
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June 25, 2006 05:28:58   #1  
vignesh        

RE: 13) Some of the friends decided to go on a picnic ...

let the no of bikes be 'x'

let the no of friends be ''y'

at a time.. 2 can travel in a bike... so the total no of friends who can go in the bike at a time 2x. then.. the no of friends left over are (no of bikes + 1) ie (x+1)... so let us equate

y 2x+(x+1)

ie y 3x+1----------EQ 1

take the 2nd case.. 2 trips r made.. in the 1st trip.. 2x travel and in the 2nd trip 3 bikes r left alone.. so only 2(x-3) travel [ assume tht the bikes return on their own.. good fiction.. hahhaa] let us equate now

y 2x+2(x-3)

ie y 4x-6----------EQ 2

solving the two equations

y 22 and x 7

ie.. there were 22 friends all together and there were 7 bikes


 
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