Study the following table carefully and answer the given questions. By what percent is the total number of books sold by store B less than that sold by store D in all the months taken together ?

Explanation

Number of books sold by store B in all the months taken together = 161 + 123 + 154 + 272 + 107 = 817 Number of books sold by store D in all the months taken together = 255 + 176 + 98 + 284 + 167 = 980 => Required % = $$\frac{980 - 817}{980} \times 100$$ = 16.6 % $$\approx$$ 16 %