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A group 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

Sagot :

D. 10

10 sandwiches at $7.75 each = 10 × $7.75 = $77.50

$113.50 - $77.50 = $38

$38 ÷ 8 soups = $4.50 or 8 soups at $4.50 = $38

10 sandwiches were ordered