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The average age of a man and his son is 27 yr. The ratio of their ages is 8 : 1, respectively. What will be the son's age after 6 yr ?
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- 6 yr
- 14 yr
- 12 yr
- 8 yr
- None of the above
Correct Option: C
Let ages of man and his son are 8k yr and k yr, respectively .
According to the question,
(8k + k)/2 = 27
⇒ k = (27 x 2)/9 = 6
Hence, age of son after 6 yr = 6 + 6 = 12 yr
