Answer :

Answer:

The answer is D)

Step-by-step explanation:

To determine whether the two ratios form a proportion, write the ratios as fractions and compare using a common denominator.

2 /1  =  6 /3  →  2 · 3 /1 · 3  =  6 /3  →  6 /3  =  6 /3

2 : 1 and 6 : 3 are proportional so, Option D is correct.

Explanation:

Write the given ratios in fraction form to check whether they are in proportion or not.

[tex]\dfrac{4}{2}=2\neq \dfrac{1}{2}[/tex]

So, 1 : 2 and 4 : 2 are not proportional.

[tex]\dfrac{6}{3}=2\neq \dfrac{1}{2}[/tex]

So, 1 : 2 and 6 : 3 are not proportional.

[tex]\dfrac{2}{4}=\dfrac{1}{2}\neq \dfrac{2}{1}[/tex]

So, 2 : 1 and 2 : 4 are not proportional.

[tex]\dfrac{6}{3}=\dfrac{2}{1}[/tex]

So, 2 : 1 and 6 : 3 are proportional. Thus, option D is correct.

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