You hve been given 2 Candles which can burn upto 60 min each.
With the help of them how will you calculate time upto 90 min.

• burn the first candle
  when it about to end burn the next candle from both the side...
  hence 2nd candle will burn in 30min
  60+30=90
• 12 years agoHelpfull: Yes(2) No(0)
• burn first candle
  when ths is burnt half then flow it off..
  n after tht we can burn these half n 1 candle n calculate 90 mintues....
  
• 12 years agoHelpfull: Yes(0) No(0)