In a group of 10 students, 7 are 13 years old, and 3 are 17 years old. What is the average (arithmetic mean) age of these 10 students?

Question

Anonymous · Answer

the average is 7.1 .

AaronKazi · Answer

7.1, or 7 if you have to round it

Anonymous · Answer

The average age of the 10 students is 14.2 years. This was calculated by adding the total age of all the students and then dividing by the number of students. The total age was found to be 142 years for all 10 students. 
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In a group of 10 students, 7 are 13 years old, and 3 are 17 years old. What is the average (arithmetic mean) age of these 10 students?

Answer (3)

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