If 10 : 5 = 20 : 10, then what is the constant of proportionality?

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Solution

The correct option is B 2
Given: 10 : 5 = 20 : 10
To find: Constant of proportionality

$10 : 5 can be written as \frac{10}{5} = 2$
$Similarly, 20 : 10 can be written as \frac{20}{10} = 2$

Hence, the constant of proportionality is 2.

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If $x$ and $y$ are directly proportional then what will be the value of constant of proportionality?

$\begin{matrix} x & 1 & 2 & 3 & 4 y & 10 & 20 & 30 & 40 \end{matrix}$

If $x$ and $y$ are directly proportional then what will be the value of constant of proportionality?

$\begin{matrix} x & 1 & 2 & 3 & 4 y & 10 & 20 & 30 & 40 \end{matrix}$

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