For this case we convert the mixed numbers to fractions:
Dwight:[tex]1 \frac {1} {3} = \frac {3 * 1 + 1} {3} = \frac {4} {3} = 1.33[/tex]
Mike:[tex]3 \frac {1} {5} = \frac {5 * 3 + 1} {5} = \frac {16} {5} = 3.2[/tex]
It is observed, that in fact, Mike takes more time to travel the road.
We subtract to know how much more time it takes Mike:
[tex]\frac {16} {5} - \frac {4} {3} = \frac {48-20} {15} = \frac {28} {15}[/tex]
So, Mike takes [tex]\frac {28} {15}[/tex] hours more than Dwight to walk the road.
Answer:
Mike takes[tex]\frac {28} {15}[/tex]hours longer than Dwight to walk the road.
