Homework Help: Math

Posted by Sephiroth on Wednesday, December 19, 2007 at 5:10pm.

"Jeremy is cooking using a recipe that requires flour, sugar and water. For each cup of sugar that Jeremy uses, he needs to use two cups of flour. He needs to use 2 1/2 more cups of water than flour. He also needs to use 3 1/2 cups less sugar than water. Find the amount of flour, sugar, and water that Jeremy needs."

I tried the problem and got these three equations:

2f = s
w = f + 2.5
w - 3.5 = s

The problem is (you've probably guessed it by now) that there is no set of matching variables to plug in. I have an exam tommorow and I am entirely lost. Please help.

Math - Michael, Wednesday, December 19, 2007 at 6:02pm
Actually, I can't think of equations to model this problem, but what you've done shows that you understand the problem.

All I did from the first sentence was...
1c sugar
2c flour

That's directly from the first sentence. Then, it tells you that you need 2.5 more cups of water than flour, so just add that to the amount of flower. Check that with the sugar sentence, and it works out.

(It's strange that I can't think of equations for this problem. It would be interesting to see if someone else could.)
- Math - Michael, Wednesday, December 19, 2007 at 6:02pm
  Sorry, there's no flower involved. :P
  - Math - Marcus, Wednesday, December 19, 2007 at 8:01pm
    What is the relationship between shapes and other shapes
- Math - Sephiroth, Wednesday, December 19, 2007 at 7:46pm
  Thank you for your help. I'm still not entirely clear, but we'll probably go over the study guide before the exam, so I'll get a better understanding of it then. Once again, thank you for your help. :)

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