Answer:
Let's assume that "X" be the number of employees in 2000.
∵ it's given :
From 2000 to 2003: the number of employees increased by a factor of 1/4
From 2003 to 2006: the number of employees decreased by a factor of 1/3
∴ We can equate the following details:
X×(increase in employee)×(decrease in employee) = 100
X×()×(
) = 100
X×()×(
) = 100
X×() = 100
X = 100×()
<em>X = 120 </em>
<u><em>Therefore, the correct option is (b)</em></u>