What is the ratio of the number of Nokia cellular phones sold by store S to the Samsung cellular phones sold by store T and U together?

Answer: Option B

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

Number of Nokia phones sold by store S = 1568
Number of Samsung Phones sold by store T and U together
  = 1792 + 640
  = 2432
$$\begin{array}{rl}& \therefore \text{ Required ratio}\\ & =\frac{1568}{2432}\\ & =\frac{49}{76}\\ & =49:76\end{array}$$