Problem number one. Zoe lit five identical candles all at the same time. They stopped burning at different times and now look as shown in the picture. Which candle stopped burning first? The longer a candle burns, the shorter it becomes because the wax burns up. These candles are identical, so they will burn equally quickly. So the candle that stopped burning first will stay the tallest. If we look at our candles, candle D is the tallest. The answer is D.

candles

burning

identical

tallest

solution