What is the difference between number of cellular phones (both Nokia and Samsung) sold by store A and total number of Nokia cellular phones sold by stores B and E together?

Solution

Number of cellular phones (both Nokia and Samsung) sold by store A

= $$\frac{19}{100} \times 6400 = 1216$$

% of Nokia cellular phones sold by stores B and E together = (18 + 8)% = 26%

=> Number of Nokia cellular phones sold by stores B and E together = $$\frac{26}{100} \times 3000 = 780$$

$$\therefore$$ Required difference = $$1216 - 780 = 436$$

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