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a is inversely proportional to b. If a = 16 when b = 1, what

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a is inversely proportional to b. If a = 16 when b = 1, what [#permalink] New post 19 May 2018, 15:24
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a is inversely proportional to b. If a = 16 when b = 1, what is b when a = 8?

(A) -2
(B) -1
(C) 2
(D) 4
(E) 8
[Reveal] Spoiler: OA

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Re: a is inversely proportional to b. If a = 16 when b = 1, what [#permalink] New post 21 May 2018, 21:08
When a and b are inversely proportional, a*b = constant

16*1 = 16
8*x = 16

Hence x = 2
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Re: a is inversely proportional to b. If a = 16 when b = 1, what [#permalink] New post 21 May 2018, 21:11
When a and b are inversely proportional, a*b = constant

16*1 = 16
8*x = 16

Hence x = 2
Re: a is inversely proportional to b. If a = 16 when b = 1, what   [#permalink] 21 May 2018, 21:11
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a is inversely proportional to b. If a = 16 when b = 1, what

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