Posted by **Katy** on Sunday, March 25, 2012 at 7:15pm.

Josh and Racquel sold cookies and brownies at the math club bake sale. The cookies cost $0.47 each, and the brownies cost $0.60 each. They sold a total of 603 items (cookies and brownies) and raised $323.84 Write a system of equations and determine the number of cookies sold and the number of brownies sold.

Could you please show the work on how to do this?

- Algebra -
**Steve**, Monday, March 26, 2012 at 10:26am
just put the facts into symbols, one item at a time:

cost of c cookies = .47c

cost of b brownies = .60b

c+b = 603

.47c + .60b = 323.84

now, you know that c = 603-b, so

.47(603-b) + .60b = 323.84

283.41 - .47b + .60b = 323.84

.13b = 40.43

b = 311

c = 603-311 = 292

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