The average age of three boys is 48 years and their ages are in proportion 2:5:5. What is the age in years of the youngest boy?  Choose the correct choice from the following options:
A) 30
B) 23
C) 24
D) 26
E) 40
2x + 5x + 5x = 144   x =12   2x = 24   Answer: 24
<result>C</result>
The average age of three boys is 48 years and their ages are in proportion 2:5:5. What is the age in years of the youngest boy?