One kilogram sample of hard water contains 4.44 mg of CaCl_(2) and 1.9 mg of NaCl. The total hardness in tems of ppm of CaCO_(3) is :

One kilogram sample of hard water contains 4.44 mg of CaCl_(2) and 1.9

1.	One kilogram sample of hard water contains 4.44 mg of CaCl_(2) and 1.9 mg of NaCl. The total hardness in tems of ppm of CaCO_(3) is :
Answer» ANSWER :4