The number of Nokia cellular phones sold by store R is what percent more than that of Samsung cellular phones sold by store P and Q together?

The number of Nokia cellular phones sold by store R is what percent more than that of Samsung cellular phones sold by store P and Q together? Correct Answer $$17\frac{11}{17}$$ %

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 R = 1120
Number of Samsung phones sold by store P and Q together
  = 672 + 280
  = 952
$$\eqalign{& \therefore \text{Required percentage} \cr& = \frac{1120-952}{952}\times100 \cr& = \frac{16800}{952}\% \cr& = \frac{300}{17}\% \cr& = 17\frac{11}{17}\% \text{ more} \cr} $$

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