Four friends each ordered a tart at a restaurant. Lisa ate \( \frac{5}{8} \) of her tart. Nathan ate \( \frac{2}{3} \) of his tart. Jackie ate \( \frac{1}{4} \) of her tart. ate \( \frac{2}{6} \) of his tart. Who ate more than half of their tart? Who ate less than half of their tart?

First up, let's break down how much each friend devoured! Lisa chowed down \( \frac{5}{8} \) of her tart, which is more than half (since \( \frac{4}{8} \) is half). Nathan enjoyed \( \frac{2}{3} \) of his tart, and since \( \frac{4}{6} \) is also more than half, he wins that round too! Jackie, on the other hand, ate only \( \frac{1}{4} \) of her tart—definitely less than half. Lastly, the mystery friend, who munched on \( \frac{2}{6} \) (or simplified, \( \frac{1}{3} \)), also fell under the half mark. So, to sum it up: Lisa and Nathan ate more than half of their tarts, while Jackie and the fourth friend ate less than half! Tart-tastic!