Leila wanted to order her IFTAR meal from La Gondola, Al Khobar. The menu stated that their pasta is a blend of wheat and corn. La Gondola does not disclose the percentage of each ingredient in the blend but we know that the wheat in the blend contains 5% protein, and the corn in the blend contains 10% protein. Overall, each 57 gram serving of pasta contains 4 grams of protein.

Leila told her sister that there was more wheat than corn in the pasta. Use multiple representations to justify if this is a true statement. (You may use DESMOS for graphing. You must also put in the algebraic solution and a table.)

Respuesta :

Step-by-step explanation:

Let the amount of wheat is x and amount of corn is y.

The total amount of pasta is

  • x + y = 57

Amount of protein in same pasta is

  • 5% of x + 10% of y = 4

or

  • 0.05x + 0.1y = 4

The graphical solution is attached

  • x = 34, y = 23

It is easy to solve the system by substitution

  • y = 57 - x
  • 0.05x + 0.1(57 - x) = 4
  • 0.05x + 5.7 - 0.1x = 4
  • 0.1x - 0.05x = 5.7 - 4
  • 0.05x = 1.7
  • x = 1.7/0.05
  • x = 34

Then the value of y is

  • y = 57 - 34 = 23

As we see x > y, so Leila is right

Ver imagen mhanifa

The above problem is solved using Multiple Representations.  Multiple representations are used to achieve a deeper comprehension of concepts related to the same operation.

How do we evaluate the veracity of Leila's assertion?

We can arrive at whether the statement is true or false by solving for the value of Y using the graphical method. Where Y is the amount of wheat and X is the amount of corn.

Our function is given as follows:
X + Y= 57. ..........1

Recall that the total amount of pasta is 57 grams

Recall as well that the total amount of protein in the pasta is given as:

0.05x + 0.1y= 4grams.......2

By inputting equations 1 and 2 into the Desmos Graph, we have x to be equal to = 34, and y = 23. (please see the attached image).

Recall that Leila's assertion was that there is more corn in the Pasta. Since x is the amount of corn, then Leila's assertion is True that: x>y.

The algebraic solution is arrived at using substitution.

Rewriting equation (1), we have

y = 57 - x .......................(3)

Let us substitute y into equation (2) above. That gives us:

0.05x + 0.1(57 - x) = 4.........................(4)

Expanding the brackets, we obtain

0.05x + 5.7 - 0.1x = 4

Collecting like terms, we can rewrite the quation as:

0.1x - 0.05x = 5.7 - 4

0.05x = 1.7

Rewriting the equation such that it is subject to x, we have

x = 1.7/0.05

x = 34

If from the above, x = 34, inputting that into equation (3) above, we have

y = 57 - 34; Therefore,

y = 23

Learn more about Multiple Representation at:
https://brainly.com/question/24708207

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