Answer: Option C
Explanation:
Let 0.8 : 0.2 : : 0.2 : N Then 0.8 x N = 0.2 x 0.2 ∴ N = ( 0.2 x 0.2) / 0.8 = 0.04 / 0.08 = 4/80 = 0.05
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