If the average (arithmetic mean) of $a, b, c$ is $5,$ the average (arithmetic mean) of $c, d, e$ is $8,$ and the

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AAPL: Moderator; Posts: 2356; Joined: Sun Oct 29, 2017 2:08 pm; Followed by:2 members

If the average (arithmetic mean) of $a, b, c$ is $5,$ the average (arithmetic mean) of $c, d, e$ is $8,$ and the

by AAPL » Wed Oct 16, 2024 12:24 pm

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If the average (arithmetic mean) of $a, b, c$ is $5,$ the average (arithmetic mean) of $c, d, e$ is $8,$ and the average (arithmetic mean) of $a, b, c, d, e$ is $7,$ what is the value of $c?$

A. $2$
B. $3$
C. $4$
D. $5$
E. $6$

OA C

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