If takes 25.5 minutes to download a file using Modem A. Modem B work at 17% of the speed of Modem A. How long does it take to download a file using a Modem B?

• 150 minutes
  
  Let Speed of modem A be k
  So Speed of modem B is 17/100*k
  
  Time taken by modem A = 25.5 minutes
  Let time taken by modem B = x
  
  k*25.5 = 17/100*k*x
  0.17*x = 25.5
  x = 25.5/0.17
  = 150 minutes
  
• 10 years agoHelpfull: Yes(33) No(6)
• 150 minutes
  Download by Modem A in 1 min.=1/25.5= 2/51
  Download by Modem B in 1 min.=(2/51)*(17/100)=2/300=1/150
  So Modem B will take 1/(1/150)=150 minutes
• 10 years agoHelpfull: Yes(27) No(0)
• 150 min 25.5*x=(17/100)*x*y
  y=150
  
• 10 years agoHelpfull: Yes(3) No(1)
• B finishes at 17% speed that of A.
  so to find time taken by B : 25.5/.17 = 150 min
• 10 years agoHelpfull: Yes(2) No(1)
• Explanation :
  suppose: A's efficiency per minute is 100X unit
  then total work done by A is :100X*25.5=2550 unit
  now B works 17% of A so B's efficiency per minute is: (100*17)/100=17x
  total work in unit is=2550
  so B will complete it =2550/17-->150 minute
  ..............................
  Answer :150 minutes
• 9 years agoHelpfull: Yes(1) No(0)
• let efficiency of modem A be x
  then efficiency of modem B = 0.17x
  when efficiency is x time = 25.5 min
  when efficiency is 0.17x time = 25.5* 0.17
  so, ans = 4.335 minutes
• 9 years agoHelpfull: Yes(1) No(3)