"A girl bought some pencils, erasers, and paper clips at the stationery store. The pencils cost 10 cents each, the erasers cost 5 cents each, and the clips cost 2 for 1 cent. If she bought 100 items altogether at a total cost of $1, how many of each item did she buy?"
Last problem on my homework, and I don't know how to set it up. I tried making 2 equations: x + y + z = 100 and .1x + .05y + .005z = 1, but I'm not sure where to go from there, or even if I'm on the right track. I could do it with 2 variables just fine, but 3 kind of throws me off.
Can someone push me in the right direction, please? Thanks so much!
Last problem on my homework, and I don't know how to set it up. I tried making 2 equations: x + y + z = 100 and .1x + .05y + .005z = 1, but I'm not sure where to go from there, or even if I'm on the right track. I could do it with 2 variables just fine, but 3 kind of throws me off.
Can someone push me in the right direction, please? Thanks so much!