DIRECTIONS for the question:Solve the following question and mark the best possible option.
The average age of the boys in a class is 12 years and that of the girls is 13 years. The average age for the whole class is :
A)
12 years
B)
13.5 years
C)
12.5 years
D)
Can't say
E)
None of these
D
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.
