The average age of 30 girls is 13 yr. The average of first 18 girls is 15 yr. Find out the average age of remaining 12 girls.

The average age of 30 girls is 13 yr. The average of first 18 girls is

1.	The average age of 30 girls is 13 yr. The average of first 18 girls is 15 yr. Find out the average age of remaining 12 girls.
A.	12yr
B.	10yr
C.	16yr
D.	10.5 yr.
E.	None of the above
Answer» C. 16yr

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The average age of 30 girls is 13 yr. The average of first 18 girls is 15 yr. Find out the average age of remaining 12 girls.

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