Respuesta :
The answer is 2.
First, you multiply 11 x 4 = 44
Now you know the total of 11 year olds.
Next, you need to determine the number of 14 year olds.
I added two 14 year olds because 44 + 28=72 and 72/6=12
Hope this helps. If I am correct please can I have brainliest answer and a thanks. :)
First, you multiply 11 x 4 = 44
Now you know the total of 11 year olds.
Next, you need to determine the number of 14 year olds.
I added two 14 year olds because 44 + 28=72 and 72/6=12
Hope this helps. If I am correct please can I have brainliest answer and a thanks. :)
There are four 4-year-old groups of students if the average age of the group of students is 12 years old option (A) is correct.
What is average?
It is defined as the single number that represents the mean value for the given set of data or the closed value for each entry given in the set of data.
The missing options are:
(A) 2
(B) 3
(C) 4
(D) 5
We have:
The average age of the group of students is 12 years old. There are only 11-year-olds and 14-year-olds.
Let there be x number of 14-year-olds
The average age of the group = 12
Number of 11-year-olds = 4
(44 + 14x)/(4 + x) = 12
44 + 14x = 12(4 + x)
44 + 14x = 48 + 12x
14x - 12x = 48 - 44
2x = 4
x = 2
Thus, there are four 4-year-old groups of students if the average age of the group of students is 12 years old option (A) is correct.
Learn more about the average here:
brainly.com/question/24057012
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