Zeze J.

asked • 02/06/16

Please help me on this

A sugar cookie recipe calls for 3 cups of flour for every 2 cups of surgar. If y is the number of cups of flour and x is the number of cups of surgar. Write a formula to determine the number of cups of flour needed for any number of cups of surgar?

1 Expert Answer

By:

Fred H. answered • 02/06/16

Tutor
5 (20)

Retired ivy league engineer math and english tutor

Zeze J.

Thank you so much for explaining The problem. 
Report

02/06/16

Austin E.

I think the above answer is close but mistaken. 
 
 
Here is why - 
 
Looking at the problem description, the key facts we know are:
3 cups of flour for every 2 cups of sugar.
 
Part 1 (Solving for 1 Cup of Flour) 
 
Divide 3 Cups of Flour by 3 gives 1 Cup of Flour 
Divide 2 Cups of Sugar by 3 gives 2/3 Cup of Sugar 
Part 1 is CORRECT:
 
for Each 1 Cup of Flour one would use 2/3rds of a Cup of Sugar! (So far so good) 
for Each 1 Cup of Sugar one would use 3/2nds Cup of Flour (this is ALSO CORRECT)
 
 
Part 2 (Solving for Y with Y representing Flour)  
 
Looking at the problem description, the key facts we know are:
3 cups of flour for every 2 cups of sugar.
 
Of if as shown above, y is Flour and x is Sugar
 
3y = 2x 
Again as in the 1st part, Y = (2/3)x 
 
However in Solving for Sugar (which is X) 
2x = 3y 
x = (3/2)y
 
 
 
Report

12/10/17

Fred H.

Hi Zeze,
 
I think you have your x and y reversed. The problem says to solve for the number of cups of flour in terms 0f the cups of sugar. Since y represents the number of cups of flour the answer needs to solve for y. I have checked my previous answer and it satisfies the condition. 
Report

12/11/17

Summer P.

Fred is correct
Report

10/24/18

McKinlee M.

Thanks that really helped me! Now I understand how to get the answer, your very helpful!
Report

12/15/20

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.