The average age of a man and his son is 28 years. The ratio of their ages is 3 :1 respectively. What is the man's age ? Choose the correct option.
A) 30 years B) 38 years C) 44 years D) 42 years E) None of these
Total sum of man’s age &amp; his son’s age =28 × 2 = 56 Now, the Ratio of their ages is 3 : 1.Therefore, Man’s age = (3/4) × 56 = 42   So, the correct answer is option D.   Answer: 42 years
<result>D</result>
The average age of a man and his son is 28 years. The ratio of their ages is 3 :1 respectively. What is the man's age ?