[tex]Jane: \ \dfrac{3}{4} =\dfrac{3\cdot15}{4\cdot15} =\dfrac{45}{60}\\\\\\Jill: \ \dfrac{3}{5} =\dfrac{3\cdot12}{5\cdot12} =\dfrac{36}{60}\\\\\\Cindy: \ \dfrac{2}{3} =\dfrac{2\cdot20}{3\cdot20} =\dfrac{40}{60}\\\\\\Jeff: \ \dfrac{2}{5} =\dfrac{2\cdot12}{5\cdot12} =\dfrac{24}{60}\\\\\\\dfrac{24}{60}<\dfrac{36}{60}<\dfrac{40}{60}<\dfrac{45}{60}[/tex]
Answer: The most amount of left pizza has Jane.
