Karla spent 9/2 hours of her time for preparing the exam and 5/2 hours on homework per day. If she sleeps 7 hours per day, how many spare hours does she have?

2 hours if they go to school.

10 hours if they dont go to school.

Step-by-step explanation:

add up the hours.

9/2+5/2=14/2=7hours + 7 hour of sleep = 14 hours.

if they go to school for 8 hours then add 8. then it = 22 hours witch gives you 2 hours

if they dont go to school then you got 24-14 hours=10 hours.