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Algebra_3

Chapter 55

Problem 1

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A bag of concrete mix has some cement C and some sand S in it.
The ratio of cement to sand is pounds to pounds. If the total concrete mix in the bag is pounds,
How much of the concrete mix is cement?

The amount of cement C = pounds.


Example:

Suppose the ratio of red (R) marbles to yellow (Y) marbles in a bag is 5 to 18.
If there are a total of 125 red marbles in the bag, how many of the marbles are yellow?

The ratio of red to yellow marbles can be written as click refresh (F5)

The total number of red marbles R = 125.

By substituting Y = 18/5R you get click refresh (F5) yellow marbles.

Try this solution by entering (18/5)125 into the Graphing Calculator in the Function f(x) = box .
Click on the Plot Graph button to obtain your solution as f(x) = 450
below the Function f(x)=box

Graphing Calculator