Chapter A.9, Problem 114AYU

To determine

To find: Sue’s exercise time on the seventh day in order to stay within the ACSM guidelines.

Answer to Problem 114AYU

Sue should exercise from $5$ to $105$ minutes on the seventh day.

Explanation of Solution

Given that, ACSM recommends $200$ to $300$ minutes of exercise per week. So, we can get,

$200 < \text{exercise time} < 300$

Also given that for the first six days of the week, Sue exercised $40, 45, 0, 50, 25$ and $35$ minutes.

∴ $\text{The total time spend to exercise for first six days} = 40 + 45 + 0 + 50 + 25 + 35 = 195\text{ minutes}$

Sue’s exercise time on the seventh day in order to stay within the ACSM guidelines is

$\begin{array}{c}200 - 195 < \text{exercise time} < 300 - 195\\ 5 < \text{exercise time} < 105\end{array}$

Sue’s should exercise from $5$ to $105$ minutes on the seventh day.