The average age of 9 students and their teacher is 16 years. The average age of the first four students is 19 years and that of the last five is 10 years. The teacher s age is

The average age of 9 students and their teacher is 16 years. The avera

1.	The average age of 9 students and their teacher is 16 years. The average age of the first four students is 19 years and that of the last five is 10 years. The teacher s age is
A.	36 years
B.	34 years
C.	30 years
D.	28 years
Answer» C. 30 years

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The average age of 9 students and their teacher is 16 years. The average age of the first four students is 19 years and that of the last five is 10 years. The teacher s age is

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