Number of cellular phones (both Nokia and Samsung) sold by store B is what per cent more than the number of Nokia cellular phones sold by store A?
A) $ 82\frac{1}{3} $ %
B) $ 86\frac{2}{3} $ %
C) $ 84\frac{2}{3} $ %
D) $ 92\frac{2}{3} $ %
E) $ 78\frac{1}{3} $ %
Correct Answer: B
$ \therefore $ Required percentage $ =\frac{1344-720}{720}\times 100 $ $ =\frac{624}{720}\times 100=86\frac{2}{3} $ %