Answer :
Kelly, her husband and 2 kids = 4 people.
12 people came to the party that was prepared for 20.
subtract 12 from 20 and divide by family (4)
20-12/4 or in this case the answer is B
12 people came to the party that was prepared for 20.
subtract 12 from 20 and divide by family (4)
20-12/4 or in this case the answer is B