A school cafeteria sells two types of sandwiches: turkey sandwiches and veggie sandwiches. On a particular day, the cafeteria sold a total of 100 sandwiches. If turkey sandwiches cost $2.00 each and veggie sandwiches cost $1.00 each, and the total revenue from sandwich sales was $140, how many turkey sandwiches were sold that day?
40
50
60
70
