The average age of a group of 8 persons was 14 years. A person with age 28 years left the group and a new person with age 16 years joined the group. Find the new average age of the group. *
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Subject:
Math -
Author:
ignaciobentley -
Created:
1 year ago
Answers 2
Answer:
1. 13yrs
2. 14yrs
3. 15.5yrs
4. 12.5yrs
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Author:
amarisferrell
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Rate an answer:
7
The new average age of the group is 12.5 Years if The average age of a group of 8 persons was 14 years A person with age 28 years left the group and a new person with age 16 years joined the group
Given:
- The average age of a group of 8 persons was 14 years
- A person with age 28 years left the group
- A new person with age 16 years joined the group
- The new average age of the group
- [tex]\text{Mean}=\dfrac{\text{sum of all the obervations}}{\text{number of the observations}}[/tex]
Find Total age of the group
Number of Persons x Average Age
8 x 14 = 112 years
Step 2:One person left and one person joined hence total persons are same as earlier 8
Step 3:
Find New Total age
112 - 28 + 16
= 100 Years
Step 4:Find New Average age
100/8
= 12.5 Years
Hence , The new average age of the group is 12.5 Years
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dawson432
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