The data here shows an hypothetical age distribution of the population of a town in Nigeria. 

Sex		Age in years
	10 and below	11-14   15-3	36 - 64	65 and above
Male	1350	2275    1135	Y	3250
Female	2650	2725    1365	4265	Z
Total	4000	X          2500	7500	6000

From this data, calculate:
(a) X, Y, Z.
(b) The total population of the town.
(c) The difference be-tween the population of male and female aged 14 and below.
(d) The percentage of the population aged 14 and below.
(e) The dependency ratio in the town.