The average age of the boys in a class is 16 years and that of the girls is 15 years. The average age for the whole class is Options:
A) 18
B) 67
C) 02
D) Data inadequate
E) 23
Explanation:   Clearly, to find the average, we ought to know the number of boys, girls or students in the class, neither of which has been given.   So, the data provided is inadequate.   Answer: Data inadequate
<result>D</result>
The average age of the boys in a class is 16 years and that of the girls is 15 years. The average age for the whole class is