If $4a = 7b = 21c,$ what is the value of $b?$

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by M7MBA » Thu Oct 07, 2021 5:57 am

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If $4a = 7b = 21c,$ what is the value of $b?$

(1) $a = \dfrac74$

(2) $c = \dfrac13$

Answer: D

Source: Princeton Review

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Source: Beat The GMAT — Data Sufficiency | Thu Oct 07, 2021 5:57 am

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