Agroup of 18 people ordered soup and sandwiches for lunch. each person in the group had either one soup or one sandwich. the sandwiches cost $7.75 each
and the soups cost $4.50 each. if the total cost of all 18 lunches was $113.50, how many sandwiches were ordered?
a. 7
b. 8
c. 9
d. 10

X - the number of sandwiches ordered
y - the number of soups ordered

There were 18 people, and each person ordered either one soup or one sandwich.


The sandwiches cost $7.75 each, the soups cost $4.50 each. The total cost was $113.50.


Set up a system of equations:


10 sandwiches were ordered.
The answer is D.