The average age of three boys is 32 years and their ages are in proportion 3:6:7. What is the age in years of the youngest boy?
Options
A) 16 B) 19 C) 18 D) 4 E) 2
3x + 6x + 7x = 96   x =6   3x = 18   Answer: 18
<result>C</result>
The average age of three boys is 32 years and their ages are in proportion 3:6:7. What is the age in years of the youngest boy?