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//Chapter 14: Water Treatment
//Problem: 7
clc;
//Initialisation of Variables
v1 = 30 //in litres for NaCl
w = 1500 //in mg/L for NaCl
//Solution
hardness = 45 * 50 / 58.5 * 1000 / 1000
mprintf("Hardness of water is :%.2f ppm",hardness)
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