The average age of 8 children of a family is 12 yr. If the age of 7 children are 12, 8, 14, 11, 9, 13 and 15 yr, then the age of 8th child will be
Correct Answer: Description for Correct answer:
Total age of 8 children =8 x 12 = 96 yr
Total age of 7 children = 12 + 8 + 14 + 11 + 9 + 13+ 15=82
The age of 8th child = 96 - 82 = 14 yr
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