At boarding school, students spend 
of their time eating and sleeping, 
of their time in class, and 
studying. The rest of the time is considered free time, which the student can spend doing activities of their own choosing. What fraction is considered free time?
of their time eating and sleeping, of their time in class, and studying. The rest of the time is considered free time, which the student can spend doing activities of their own choosing. What fraction is considered free time?
Now add these three fractions:
Compute the time left by subtracting 
from the fraction representing the whole day, 
:
(Reduced to the lowest terms)