Mary should swim 2 hours and 48 minutes for each morning practice.
Step-by-step explanation:
Assuming that she swims 2 hours in the evening, Mary should swim 10 hours in the evening per week and 14 hours in the morning.
Divide 14 hours by 5 since she swims 5 days per week for a total of 2.8 hours per week. Since it is 80% of an hour, you could safely assume that she swims 48 minutes which totals to 2 hours and 48 minutes.
Mary's morning swim practices are 2 hours and 48 minutes long (2.8 hrs)
Step-by-step explanation:
If Mary swims 5 days a week and 24 hours a week and at night she swims 2 hours each practice than what you would do to find out how long the morning practices are is first find out how many hours a week of practice are at night so you would multiply 5 by 2 to get 10, 5 because she practices 5 days a week and 2 because many hours the practices at night are, the answer 10 means that she practices 10 hours at night per week. Next, you subtract 10 from 24 to get 14, 24 because that is the total number of hours she practices per week and 10 because that is the total number of night hours she practices per week, the answer 14 means that she practices a total of 14 hours during the morning per week. Lastly, to get the length of each morning session you divide 14 by 5 to get 2.8, 14 because that is the total hours of practice during the morning, 5 because that is the number of days she practices each week, the answer 2.8 means that her morning practices are 2.8 hours long or 2 hours and 48 minutes long.
M+P =P+M is an example of the commutative propriety of addition
when numbers or parentheses connected by addition or multiplication switch places (commute) we have commutative propriety of addition or multiplication
