I am student and need help in solving following problem.
Problem : " Two groups of students, whose averages are 15 years and 25 years , combine to form a third group whose average age is 23 years. What is the ratio of number of students in the first group to the number of students in the second group? "
The question have four options : (A) 8 : 2 (B) 2 : 8 (C) 4 : 6 (D) None of them.
Reference : The question is taken from the book "How to prepare for the quantitative aptitude for the CAT by the Arun Sharma 4th edition , Page number 101 ,Question number : 5, Chapter number 3 : Averages.
Can some one give me the solution with the appropriate explanation ?
Thanking you in advance.
Problem : " Two groups of students, whose averages are 15 years and 25 years , combine to form a third group whose average age is 23 years. What is the ratio of number of students in the first group to the number of students in the second group? "
The question have four options : (A) 8 : 2 (B) 2 : 8 (C) 4 : 6 (D) None of them.
Reference : The question is taken from the book "How to prepare for the quantitative aptitude for the CAT by the Arun Sharma 4th edition , Page number 101 ,Question number : 5, Chapter number 3 : Averages.
Can some one give me the solution with the appropriate explanation ?
Thanking you in advance.
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