You are given two candles of equal size

Answer :

We know that each candle lasts for 60 minutes that is when we  light up from one end. What if we light up the candle from both ends, obviously it will last for only 30 minutes (half). So the answer would be. Light up one candle from both ends to count 30 minutes and once it is completely burnt out light up the other candle only from one end, whic will again last for 60 minutes. So in total we will have 90 minutes.

Based on this explanation not try to thing again for 45 minutes. If you still don’t get, click below to see the answer.

Answer for 45 minutes

To get 45 minutes light up one candle from both ends and another candle only from one end. After 30 minutes one candle will burn out completely and other candle will be finished half. At this time light up other end of the candle which is still burning, this will give you 15 minutes.