Ans: A
A is true. The percentage increase of the annual revenue of company $X$
A is true. The percentage increase of the annual revenue of company $X$
$\begin{array}{cl}
= & \dfrac{60 – 30}{30} \times 100\% \\
= & 100\%
\end{array}$
The percentage increase of the annual revenue of company $Y$
$\begin{array}{cl}
= & \dfrac{6 – 3}{3} \times 100\% \\
= & 100\%
\end{array}$
B is false. According to the argument in A, the two percentage increases are the same.
C is false. According to the argument in A, the two percentage increases are the same.
D is false. According to the argument in A, the two percentage increases are the same.
