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ATQ, Let the present age of Anuj and Bishnu be 3x and 4x years, respectively. then, we can say that 1.2 × 4x – 3x = 18 Or, 4.8x – 3x = 18 Or, 1.8x = 18 Or, x = 1.8/18 = 10 Therefore, present age of Anuj is = 3x = 30 years
Hardness of water is due to the presence of salts of
Match List I with List II
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Statement I
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