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if b equals 10% of a and c equals 20% of b, then

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Joined: 16 Oct 2016
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Location: India
Concentration: General Management, Healthcare
GMAT 1: 640 Q40 V38
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if b equals 10% of a and c equals 20% of b, then  [#permalink]

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New post 25 Nov 2018, 02:11
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A
B
C
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Difficulty:

  25% (medium)

Question Stats:

64% (01:28) correct 36% (01:08) wrong based on 11 sessions

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If b equals 10% of a and c equals 20% of b, then which one of the following equals 30% of c

A. 0.0006% of a

B. 0.006% of a

C. 0.06% of a

D. 0.6% of a

E. 6% of a

Source Novas GMAT Math Prep

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Re: if b equals 10% of a and c equals 20% of b, then  [#permalink]

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New post 25 Nov 2018, 03:26
fitzpratik wrote:
If b equals 10% of a and c equals 20% of b, then which one of the following equals 30% of c

A. 0.0006% of a

B. 0.006% of a

C. 0.06% of a

D. 0.6% of a

E. 6% of a

Source Novas GMAT Math Prep


B=1/10 a , c=1/50a so 3/10 c = 0.006a = 0.6% of a.
Give kudos if it helps :)
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Re: if b equals 10% of a and c equals 20% of b, then &nbs [#permalink] 25 Nov 2018, 03:26
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if b equals 10% of a and c equals 20% of b, then

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