Answer:
He sold 180 chicken sandwiches and 150 burguers.
Step-by-step explanation:
Since 330 items were sold, then the amount of burguers and chicken sandwiches sold must be equal to this value. From this information we have:
burguers + sandwiches = 330
We know that each burguer cost $9 and each chicken sandwich cost $11.25 and that we made a total of $3,375. So we have:
9*burguers + 11.25*sandwiches = 3,375
From the first equation we have:
burguers = 330 - sandwiches
Applying it on the second equation:
9*(330 - sandwiches) + 11.25*sandwiches = 3,375
2,970 - 9*sandwiches + 11.25*sandwiches = 3,375
2.25*sandwiches = 3,375 - 2,970
2.25*sandwiches = 405
sandwiches = 405/2.25 = 180
So,
burguers = 330 - 180 = 150
He sold 180 chicken sandwiches and 150 burguers.
