Math (algebra)
posted by zach .
Matt has to bake muffins. He uses x eggs for each 200 grams of flour. If he has to use 900 grams of flour how many eggs will he use? I have to set this up as an algebra problem. I am stuck. Our class is just learning this and I don't understand.

carry the units with you, and it will help. You want to convert from grams of flour to eggs
x eggs = 200g
or,
x eggs/200g = 1
you can always multiply by 1 and not change anything.
900 g * x eggs/200g = 900g/200g * x eggs = 9x/2 eggs
Or, since 900 = 9/2 * 200, he will use 9/2 times the eggs used for 200 grams of flour. 
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