Q. Dhaniram lights a Agarbatti each morning and stops it at 1/3rd of its length. After how much days he will be left with 10% of the original height of agarbatti.
Options
a) 2
b) 3
c) 4
d) cannot be determined

• let us say length x
  1st mrng x/3
  2nd mrng(x/3)*(1/3)=x/9
  10% of original height means x/10
  3 rd mrng =x/27
  so answer 2
• 10 years agoHelpfull: Yes(14) No(6)
• can not be determine until aur unless the length of the agarwatti is not give because solving questin this depend on x so we cannot determine
• 10 years agoHelpfull: Yes(10) No(9)
• let length of agarbatti be x.
  use alligations formula,
  x(1-fraction of agarbatti reduse)^t =x*10/100
  => x(1-1/3)^t = x*10/100
  => (2/3)^t = 10/100
  taking log on both side
  t(log(2/3))=log(10/100)
  solve it............
• 10 years agoHelpfull: Yes(4) No(0)
• cannot determine as after 3rd day it is 1/27 so cannot find days
• 10 years agoHelpfull: Yes(0) No(1)