SOLUTION: A cookie recipe which calls for 3 1/2 cups of flour makes 5 dozen cookies. How much flour is needed to make 3 dozen cookies? Tried 3.5/5 * x/3 and 3.5/5 dividied by x/3

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: A cookie recipe which calls for 3 1/2 cups of flour makes 5 dozen cookies. How much flour is needed to make 3 dozen cookies? Tried 3.5/5 * x/3 and 3.5/5 dividied by x/3      Log On


   

Question 418789: A cookie recipe which calls for 3 1/2 cups of flour makes 5 dozen cookies. How much flour is needed to make 3 dozen cookies? Tried 3.5/5 * x/3 and 3.5/5 dividied by x/3
Found 2 solutions by duckness73, ewatrrr:
Answer by duckness73(47) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = #cups of flour to make 3 dozen cookies
Using the ratios: (Cups of flour)/(number of dozens of cookies)
So we have 3.5/5 and x/3 meaning that
3.5/5 = x/3
(3) * (3.5/5) = x
10.5/5 = x
2.1 = x
So the number of cups of flour to make 3 dozen cookies is 2.1 cups.

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

Let x represent flour needed to make 3 dozen cookies

Question Sets Up the Proportion  ( 3 1/2 = 7/2)

%287%2F2%29%2F5+=+x%2F3    | Cross Multiplying to solve for x 

   5x = 3*(7/2)

   5x = 21/2

    x = 21/10  2.1 c for 3doz