In the following Pie diagram, people of difference age groups of a town are represented by the angle made by that sector at the centre. The Total population of that town is 72,000. Based on this information, answer the questions.

In the above diagram :
A stands for less than 10 years of age.
B stands for 10 to 20 years of age.
C stands for 20 to 30 years of age.
D stands for 30 to 40 years of age.
E stands for 40 to 50 years of age.
F stands for above 50 years of age.