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# If a and b are positive integers, what percent of (9-a^3) is

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If a and b are positive integers, what percent of (9-a^3) is [#permalink]  26 Jun 2020, 09:20
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Question Stats:

73% (00:17) correct 26% (01:40) wrong based on 15 sessions
If a and b are positive integers, what percent of $$(9-a^3)$$ is b ?

A. $$100b(3-a)$$

B. $$b(9-a^3)$$

C. $$\frac{b}{9-a^3}$$

D. $$\frac{9-a^3}{100b}$$

E. $$\frac{100b}{9-a^3}$$
[Reveal] Spoiler: OA

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Founder
Joined: 18 Apr 2015
Posts: 12080
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Kudos [?]: 3014 [0], given: 11279

Re: If a and b are positive integers, what percent of (9-a^3) is [#permalink]  26 Jun 2020, 09:20
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Re: If a and b are positive integers, what percent of (9-a^3) is [#permalink]  27 Jun 2020, 01:33
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(9-a^3) * x/100 = b
x = (100*b)/(9-a^3)
Therefore, option E
Re: If a and b are positive integers, what percent of (9-a^3) is   [#permalink] 27 Jun 2020, 01:33
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