Dividing Fractions · Superchallenge problem

Two candles are the same length and are lit at the same time. Each burns at a steady rate. The first candle burns $\dfrac{2}{5}$ of its length in $1\tfrac{1}{3}$ hours. The second candle burns $\dfrac{3}{8}$ of its length in $\dfrac{3}{4}$ of an hour. When one candle has burned out completely, what fraction of the other candle is still left?