//Chapter 14: Water Treatment //Problem: 2 clc; //Declaration of Variables wt1 = 9.3 //in mg/L wt2 = 17.4 //in mg/L wt3 = 8.7 //in mg/L wt4 = 12.6 //in mg/L //Solution temp_h = wt1 * 100 / 146 + wt2 * 100 / 162 //where temp_h is temporary hardness perm_h = wt3 * 100 / 95 + wt4 * 100 / 136 //where perm_h is permanent hardness total_h = temp_h + perm_h //where total_h is total hardness mprintf("Temporary hardness: %.2f mg/L\n",temp_h) mprintf(" Total hardness: %.2f mg/L",total_h)