Solve the following problem: Rosalie exercises for 2/5 of an hour every morning. How much time does she spend exercising in a week? Convert the answer to a mixed number.
A.9 1/5
B.7 2/5
C.2 4/5
D.14/5
B. 7 2/5
To find the total time Rosalie spends exercising in a week, we first calculate how much time she exercises in one day:
2/5 hours/day * 1 day = 2/5 hours/day
Then, we multiply that by 7 days in a week:
2/5 hours/day * 7 days = 14/5 hours/week
Now, we convert 14/5 to a mixed number:
14 รท 5 = 2 with a remainder of 4
This means 14/5 = 2 4/5
Therefore, Rosalie spends 2 4/5 hours exercising every week, which is equivalent to 7 2/5. So, the answer is B. 7 2/5.