The average age of three boys is 120 years and their ages are in proportion 2:6:8. What is the age in years of the youngest boy?  Select the correct option
A) 10 B) 9 C) 15 D) 6 E) 12
2x + 6x + 8x = 120   x =7.5   2x = 15   Answer:15
<result>C</result>
The average age of three boys is 120 years and their ages are in proportion 2:6:8. What is the age in years of the youngest boy?