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if the mean of the numbers 2x,3x,4x and 3x is 12,then the sum of the numbers is? a)4 b)12 c)48 d)80
Question
if the mean of the numbers 2x,3x,4x and 3x is 12,then the sum of the numbers is?
a)4
b)12
c)48
d)80
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Mathematics
3 years
2021-07-22T13:22:39+00:00
2021-07-22T13:22:39+00:00 1 Answers
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Answers ( )
Answer:
C. 48.
Step-by-step explanation:
If the mean is 12, then 12 must be 2x, 3x, 4x, and 3x divided by 4.
–>![Rendered by QuickLaTeX.com \frac{2x+3x+4x+3x}{4}=12](https://documen.tv/wp-content/ql-cache/quicklatex.com-b9e0720b3ba3a2a8b19f9c6631977d70_l3.png)
–>![Rendered by QuickLaTeX.com \frac{12x}{4}=12](https://documen.tv/wp-content/ql-cache/quicklatex.com-7d980e0ac36cb6a1b5b5360ad67e6654_l3.png)
–>![Rendered by QuickLaTeX.com \\3x=12](https://documen.tv/wp-content/ql-cache/quicklatex.com-cc35c8e984b3ea39cc7025aa0a0a7336_l3.png)
–> x=4
Add: 2x+3x+4x+3x=8+12+16+12=48