The average age of a couple was 26 years...

The average age of a couple was 26 years at the time of marriage. After 11 years of marriage, the average age of the family with 3 children become 19 years. The average age of the children is

a. 8

b. 7

c. 9

d. 10

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The average age of a couple was 24 years. After their 1^(st) and 2^(nd) children (twins) were born, the average age of the family became 13.5 years. The average age of the family just after 3^(rd) child was born was. 13.2 years. The average age of the family afte 4^(rd) child was 16 years. The current average age of the family is 19 years. What is the current age of the twins children?

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