The average age of 3 girls is 20 years and their ages are in the propo – McqOptions

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1.	The average age of 3 girls is 20 years and their ages are in the proportion 3 : 5 : 7. the age of youngest girl is ?
A.	4 years
B.	6 years 8 months
C.	8 years 3 months
D.	12 years
Answer» E.

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