Correct Answer: 62 Years
Explanation:
Let the average of 8 men be x. Age of new man be N. Total age of 8 men = 8x ⇒ x + 4 = ((8x – 30) + N)/8 ⇒ 8x + 32 = 8x – 30 + N ⇒ N = 32 + 30 ⇒ N = 62
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