Answer:
126 hrs
Explanation:
-Given the school year has 180 days and the non-working student spends 42 minutes more than the working student.
-The total time during the school year is calculated as;
![Total Time=Time/day * No \ of \ Days\\\\=42\ minutes * 180\\\\=7560\ minutes](https://img.qammunity.org/2021/formulas/mathematics/high-school/utv5pxgop9hludqq8zu6zk9yrf2m14jl70.png)
We convert our calculated time in hour(1hr=60 minutes):
![=(7560\ mins)/(60\ mins)\\\\=126\ hrs](https://img.qammunity.org/2021/formulas/mathematics/high-school/1cys69arlrmp2x1u89ik64mlhvzsmsd9oh.png)
Hence, the average non-working spends an average of 126 hrs that the working student.