Question

If y is directly proportional to
and x = 2 when y = 20, what is the value of x when y = 1.25?​

Answer 1

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2 : 20 : : x : 1.25

$20x = 1.25 \times 2$

$20x = 2.5$

$x = \frac{2.5}{20}$

$x = \frac{25}{200}$

$x = \frac{1}{8}$

$x = 0.125$