Solution:
Given that,
Lisa and Ann are eating a box of crackers
[tex]Lisa\ ate = \frac{3}{6}\\\\Ann\ ate = \frac{1}{4}[/tex]
[tex]Together\ eaten = Lisa\ ate + Ann\ ate\\\\Together\ eaten = \frac{3}{6} + \frac{1}{4}\\\\Together\ eaten = \frac{1}{2} + \frac{1}{4}\\\\Together\ eaten = \frac{1 \times 2}{2 \times 2} + \frac{1}{4}\\\\Together\ eaten = \frac{2}{4} + \frac{1}{4}\\\\Together\ eaten = \frac{3}{4}[/tex]
Thus Lisa and Ann ate 3/4 of the box together
