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Bunuel
Over the next ten years, the sales department of a company plans to increase its staff by 20 percent while the human resources department plans to decrease its staff by 10 percent. If there are currently two hundred total employees between the two departments, and three times as many people work in the sales department as work in the human resources department, how many people will there be in both departments in ten years?

A. 235
B. 225
C. 210
D. 205
E. 200

Sales is S and Human Resources is H: \(S = 3H\) and \(200=S+H\), which is \(200=3H+H=4H\), so \(H=50\) and \(S=150\).

After 10 years: \(S = 1.20*S=1.20*150=180\) and \(H = 0.9*H=0.9*50=45\).

Total after 10 years in both departments is \(180+45=225\).

(B) is the answer.
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