During a certain week, a seal ate 50% of the first 80 smelt it came across, and 20% of the remaining smelt it came across. If the seal ate 40% of the smelt it came across during the entire week, how many smelt did it eat? Choose the most appropriate option:
A) 48 B) 40 C) 55 D) 64 E) 80
Total smelt = x.   Then, 0.5*80+0.2(x-80)=0.4*x --&gt; x=120 --&gt; 0.4*x=48.   48nswer: 48.
<result>A</result>
During a certain week, a seal ate 50% of the first 80 smelt it came across, and 20% of the remaining smelt it came across. If the seal ate 40% of the smelt it came across during the entire week, how many smelt did it eat?