#### Answer

$\frac{48}{1440}$ = $\frac{1}{30}$

#### Work Step by Step

First we need to calculate the total number of minutes in a day,
As in 1 day there are 24 hours and in each hour there are 60 min so total number of minutes in a day are = 24 * 60 = 1440 min
People are spending 48 minutes on personal care
Americans spend how much time on personal care compared to the total number of minutes in a day = $\frac{48}{1440}$ = $\frac{1}{30}$