In a barrel 729ml of oil. N amount of oil is replaced by water. If the process continues for the 6times and find the amount of oil will be?

• 729(1-n/729)^6
• 9 years agoHelpfull: Yes(7) No(1)
• 729*((729-n)/729)^6
• 9 years agoHelpfull: Yes(3) No(1)
• 729 * (1-n/729)^6
• 9 years agoHelpfull: Yes(2) No(2)
• explain the procedure
• 9 years agoHelpfull: Yes(2) No(2)
• 729(1-N/729)^7
• 6 years agoHelpfull: Yes(2) No(1)
• 729*(1-N/729)^6
• 9 years agoHelpfull: Yes(1) No(1)
• In questions of replacement where we initially have some quantity of pure element (like petrol), and we keep on replacing a fixed portion of this pure liquid every time with some other element (like water) thus making it a mixture, we apply the following formula for finding the quantity of pure element after ‘n’ replacements :
  P x [1 – (R / P)]n, where
  P is the initial quantity of pure element
  R is the quantity replaced every time
  n is the number of replacements
  
  729(1-n/729)^6
• 5 years agoHelpfull: Yes(1) No(0)
• 729*(1-(N/729))^6
• 6 years agoHelpfull: Yes(0) No(0)
• here, let the 729 ml of oil be x, from which y i.e(N amount) is taken out and replace by water then the after n (6) times of replacing, use the formula,
  
  Oil=x(1-y/x)^n.
  
  Oil=729(1-N/729)^6
• 5 years agoHelpfull: Yes(0) No(0)