Amy, Natasha, and Eric sold candy bars for their school. Eric sold fewer than Amy, and Amy sold more than Natasha. If Natasha sold 450 candy bars, how many did Eric sell?

A) 240

B) 280

C) 320

D) 330

E) 360

Hi, I am wondering if someone can tell me what I did wrong. I keep getting 180 as the answer.
3E=A
A=6/5N
N=450
E=?

A=6/5(450)=540

540=3E
E=180

Please tell me what I am doing wrong. Thanks