Sets $M$ and $N$ contain exactly $m$ and $n$ elements, respectively. What is the value of $n?$

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VJesus12: Legendary Member; Posts: 2276; Joined: Sat Oct 14, 2017 6:10 amFollowed by: 3 members

by VJesus12 » Thu Mar 18, 2021 12:58 pm

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Sets $M$ and $N$ contain exactly $m$ and $n$ elements, respectively. What is the value of $n?$

(1) $7m=8n$
(2) The intersection of $M$ and $N$ contains exactly $0.4m$ elements.

Answer: E

Source: GMAT Prep

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Source: Beat The GMAT — Data Sufficiency | Thu Mar 18, 2021 12:58 pm

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