Observe the following tables and find which pair of variables (here x and y) are in inverse proportion.

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None of these

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Solution

The correct option is
B

Two quantities x and y are said to vary in inverse proportion, if there exists a relation of the type xy = k between them, k being a constant.

In the given tables, only the $2^{n} d$ table satisfies the above condition

That is, xy = 600

So, option B is correct.

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Similar questions

x

y

$x$	$75$	$45$	$30$	$20$	$10$
$y$	$10$	$30$	$25$	$35$	$65$

x

y

$x$	20	17	14	11	8	5	2
$y$	40	34	28	22	16	10	4

In which of the following equations is x and y in inverse proportion ?

x	20	17	14	11	8	5	2
y	40	34	28	22	16	10	4

x	6	10	14	18	22	26	30
y	4	8	12	16	20	24	28

x	5	8	12	15	18	20
y	15	24	36	45	54	60

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