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The average age of a husband and wife wa...

The average age of a husband and wife was 29 years when they were married 12 years ago. At present, the average age of husband, wife and a child, who was- born during .the interval (12 years), is 30 years. After how many years of their marriage was the child born?

A

6

B

4

C

2

D

3

Text Solution

Verified by Experts

The correct Answer is:
B
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