College

8: MathXL for School: Practice & Problem Solving

Due: April 23 at 11:59 PM (Late Submission)

Question 7:
Paul has 23 cups of water. Is this enough water to make 13 batches of green slime for a class project? Explain your answer.

Question 8:
There are 16 tablespoons in 1 cup. How many tablespoons of cornstarch would Paul need to make 4 batches of green slime?

A. Yes. Paul needs 11.5 pints of water, which equals [tex]\square[/tex] cups.
B. No. Paul needs [tex]\square[/tex] pints of water, which equals [tex]\square[/tex] cups.

Answer :

We start by finding out how much water is needed for 13 batches of green slime. The recipe requires
[tex]$$11.5 \text{ pints}$$[/tex]
of water. Since there are [tex]$2$[/tex] cups in [tex]$1$[/tex] pint, we convert pints to cups as follows:
[tex]$$11.5 \text{ pints} \times 2 \frac{\text{cups}}{\text{pint}} = 23 \text{ cups}.$$[/tex]
Paul has [tex]$23$[/tex] cups of water, which is exactly the amount needed. Therefore, Paul has enough water for the project.

Next, we determine how many tablespoons of cornstarch are needed to make 4 batches of green slime. The recipe calls for
[tex]$$\frac{1}{4} \text{ cup of cornstarch per batch.}$$[/tex]
For 4 batches, the total amount in cups is:
[tex]$$4 \times \frac{1}{4} = 1 \text{ cup}.$$[/tex]
Since there are [tex]$16$[/tex] tablespoons in [tex]$1$[/tex] cup, we calculate the number of tablespoons by:
[tex]$$1 \text{ cup} \times 16 \frac{\text{tablespoons}}{\text{cup}} = 16 \text{ tablespoons}.$$[/tex]

Thus, the final answers are:

1. Yes, Paul has enough water because he needs [tex]$11.5$[/tex] pints, which is equivalent to [tex]$23$[/tex] cups.
2. Paul needs [tex]$16$[/tex] tablespoons of cornstarch to make 4 batches of green slime.