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.
To find the total time Rosalie spends exercising in a week, we need to multiply the time she spends exercising each morning by the number of mornings in a week.
Since there are 7 days in a week, Rosalie exercises for 2/5 x 7 = 14/5 hours in total.
To convert this fraction to a mixed number, we divide 14 by 5. The quotient is 2 with a remainder of 4.
So, Rosalie spends 2 4/5 hours exercising in a week.