You have 2 candles that can burn for 30 minutes each. How would you measure exactly 45 minutes ?You have 2 candles that can burn for 30 minutes each. How would you measure exactly 45 minutes ?
9-Ans- Simple, kindle the first candle. Burn the first candle from one end, and as soon as it finishes off (30 mins are over), burn the second candle from both the ends ! (The second candle will be finished off in only 15 minutes as it is burning from both ends.)