Average age of a group of 20 boys is 15 years. If a boy leaves the group, then the average age becomes 14.5 years. What is the age (in years) of the boy who left the group?

Average age of a group of 20 boys is 15 years. If a boy leaves the gro

1.	Average age of a group of 20 boys is 15 years. If a boy leaves the group, then the average age becomes 14.5 years. What is the age (in years) of the boy who left the group?
A.	24.5
B.	25.5
C.	23.5
D.	21
Answer» B. 25.5

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Average age of a group of 20 boys is 15 years. If a boy leaves the group, then the average age becomes 14.5 years. What is the age (in years) of the boy who left the group?

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