At a cafeteria, Mary orders two pieces of toast and a bagel, which comes out to $3.15. Gary orders a bagel and a muffin, which comes out to $3.50. Larry orders a piece of toast, two bagels, and three muffins, which comes out to $8.15. How many cents does one bagel cost?
toast = t
bagels = b
muffins = m
Use systems of equations. I'll help on the first part. Try finishing the rest yourself!
t+2b+3m = 8.15
- 2t+b = 3.15
b + m = 3.50
---------------------------
-t + 2m = 1.50