Chapter 1 - Equations and Inequalities - 1.8 Absolute Value Equations and Inequalities - 1.8 Exercises - Page 169: 82

$5699.25\le T_L\le 6338.25\ g$ $8230.5\le T_E\le 9207\ g$

Step 1. For rate $R_L$ with $225$ students in one hour, we have $T_L=255R_L$. Known $25.33\le R_L\le 28.17$, we get $5699.25\le T_L\le 6338.25\ g$ Step 2. For rate $R_E$ with $225$ students in one hour, we have $T_E=255R_E$. Known $36.58\le R_E\le 40.92$, we get $8230.5\le T_E\le 9207\ g$