TOoPiD cANdLe qN

Impossibly frustrating.

Impossible question number 1:

Candle A takes 10 hours to burn and Candle B takes 5 hours to burn. If both Candle A and Candle B are of the same height, how long will it take for Candle A to be thrice the height of Candle B?


Any kind soul can enlighten mi?

The answer is 4 hours.