You will have to get the difference and get a common denominator but first combine the mixed number:
[tex]1 \: \frac{1}{4} - \frac{5}{6} = \frac{5}{4} - \frac{5}{6} = \frac{15}{12} - \frac{10}{12} [/tex]
Then subtract the numbers
[tex] \frac{15}{12} - \frac{10}{12} = \frac{5}{12} [/tex]
Angel took 5/12 hours longer than Chris
