3 Aliyah ate \( 2 / 5 \) of her lunch, and Chanel ate \( 1 / 3 \) of her lunch. Which girl ate more lunch?

To find out who ate more lunch, we need to compare the fractions \( \frac{2}{5} \) and \( \frac{1}{3} \). To do this, we can find a common denominator, which is 15. Aliyah ate \( \frac{2}{5} = \frac{2 \times 3}{5 \times 3} = \frac{6}{15} \). Chanel ate \( \frac{1}{3} = \frac{1 \times 5}{3 \times 5} = \frac{5}{15} \). Now we can directly compare \( \frac{6}{15} \) and \( \frac{5}{15} \). Aliyah ate \( \frac{6}{15} \), and Chanel ate \( \frac{5}{15} \), so Aliyah ate more lunch!