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Q:-) The average age of three boys is 25 years and their ages are in the proportion 3:5:7. What is the age of the youngest boy?
(a) 15 years (b) 18 years
(c) 21 years (d) 13 years
Негізгі бет The average age of three boys is 25 years and their ages are in the proportion 3:5:7. What is the
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