The no of employees in a factory between $1980$ to $2000$ is twice the number who has joined between 2000 and 2018 . if the factory had 20,000 employees by the end of the year 2000 , and x no of the employees joined between 2000 and 2018, then which of the following is true ?

Question

$\begin{array}{1 1} (a)\;20,000\;x=2\\ (b)\;2x=20,000\\ (c)\;\frac{x}{2}=20,000 \\(d)\;x+20,000=2 \end{array} $