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The average (arithmetic mean) of 10, 14, and 3x is 18. What is the value of x? A) 25 B) 26 C) 27 D) 30
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4 votes
The average (arithmetic mean) of 10, 14, and 3x is 18. What is the value of x?

A) 25
B) 26
C) 27
D) 30

User Yaneth
by
4.1k points

2 Answers

3 votes
B

It is a great match question you go need to do 10x14+3x=18
User Jonathan Hussey
by
3.8k points
4 votes
Mean=(10+14+3x)/(3)
Which mean value ady stated, 18
18=(10+14+3x)/(3)
54= (10+14+3x)
54-10-14=3x
3x=30
x=10

Hope this can help.
User Ingmar Boddington
by
3.8k points
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