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Sunday, June 28, 2020

The average age of 80 girls was 20 years, the average age of 20 of them was 22 years and that of another 20 was 24 years. Find the average age of the remaining girls.

The average age of 80 girls was 20 years, the average age of 20 of them was 22 years and that of another 20 was 24 years. Find the average age of the remaining girls.
A17 years
B19 years
C21 years
D15 years

Correct answer is: 17 years

Explanation:

Akilesh Kharvi
answered Jun 28 '2020 at 13:57

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