Question

. x and y are in inverse proportion or are inversely proportional. When x = 15 and y = 6, what will be the value of ) x when y = 4.5

Answer 1

Answer:

GIVES THAT -

$x \: \infty \: \frac{1}{y}$

WE SHOULD WRITE THIS AS -

$\frac{ x_{1} }{ x_{2} } = \frac{ y_{2} }{ y_{1}}$

SO , ACCORDING TO THE QUESTION -

$x_{1} = 15$

$y_{1} = 6$

$y_{2} = 4.5$

$x_{2} = x$

PUT THE VALUES -

$\frac{15}{x} = \frac{4.5}{6}$

$4.5x = 15 \times 6$

$x = 20$

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