Answer:
320
Step-by-step explanation:
if out of every 5 guests 2 people will order the soup that is equivalent to the fraction:
2/5
then you need to find the equivalent fraction of 2/5 with a denominator of 800 so you would set up your proportion:
2/5=x/800
then you would multiply and get:
16,000/5
and that would equal 320