The average age of three boys is 15 yr. If their ages are in the ratio 3 : 5 : 7, then the age of the youngest boy (in yr) is _______
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Aptitude Questions:
The average age of three boys is 15 yr. If their ages are in the ratio 3 : 5 : 7, then the age of the youngest boy (in yr) is _______
Let us consider the age of the three boys as 3y, 5y and 7y.
The average of their ages is 15, i.e.
(3y + 5y + 7y)/3= 15 => 15y =45 => y = 3.
Hence, the age of youngest boy is 3y i.e. 9
Aptitude Questions:
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Aptitude Questions:
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Aptitude Questions:
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Aptitude Questions:
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Aptitude Questions:
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Aptitude Questions:
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Aptitude Questions:
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Aptitude Questions:
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Aptitude Questions:
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Aptitude Questions:
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