Mathematics
Medium
Question
The average age of three boys is 15 years and their ages are in proportion 3:5:7. What is the age in years of the youngest boy?
A
15
B
9
✓ Official correct answer
C
18
D
21
Community credibility
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A
15
No member explanations yet for this option.
B
9
No member explanations yet for this option.
C
18
No member explanations yet for this option.
D
21
No member explanations yet for this option.