What is the average of Nokia cellular phones sold by store P, R, S and T together?

Answer: Option A

Store	Nokia Cellular Phones	Samsung Cellular Phones	Total Number of Cellular Phones
P	896	672	1568
Q	840	280	1120
R	1120	896	2016
S	1568	1344	2912
T	448	1792	2240
U	704	640	1344

Total Nokia Phone sold by stores P, R, S and T
= 896 + 1120 + 1568 + 448
= 4032
∴ Required average
= $$\frac{4032}{4}$$
= 1008