Math
posted by JJ .
Marshal sleeps 8 hours each day how many hours does Marshal sleep in one week

8hr/1day * 7days/1week.
Cross Cancel (day with days)
You now remain with hrs per week
After you remain with 8hr * 7
Which equals 56hrs in One Week
Remember You Are Using Dimensional Analysis 
Seven days in a week.. Eight hours a day...
7 x 8 
SIMPLY MULTIPLY THE 8 HOURS BY 7 DAYS WHICH GIVES 56