All categories

3 years ago

Emily added 5 grams of water into 20 grams of 50% salt solution. She made _ grams of _% salt solution.

1 answer:

8 0

For the first blank, the answer should be the total weight of the solution which is derived from adding 5 grams and 20 grams. The answer would be,

T = 5 + 20 = 25 grams

For the second blank, the % solution is derived by dividing the amount of salt initially by the total amount of the resulting solution. This is as shown below.

C = ((20 x 0.5) / 25) x (100%)

Simplifying,
C = 40%

Answers:
a. 25 grams
b. 40%

You might be interested in

mrs. Williams uses the following recipe for crispy rice treats. She decided to make 2/3 of the recipe. 2 cups of melted butter,

Ilya [14]

To find how much she needs of every ingredient, multiply every ingredient by 2/3.

Butter: 2•2/3=4/3=1&1/3 cups
Marshmallows: 24•2/3=16 oz
Cereal: 13•2/3= 26/3=8&2/3 cups

3 0

3 years ago

Read 2 more answers

Which of the following is not a solution for finding the perimeter of the square?

kenny6666 [7]

Answer:

Step-by-step explanation:

y needs to provide a number

7 0

3 years ago

Help please!! a pex test!!

amid [387]

Answer:

the domain is -5 to infinity

Explanation:

(

)

√

A square root is

≥

Here is a graph of the function

≥

−

{

√

[

−

]

}

6 0

3 years ago

While traveling to and from a certain destination, you realized increasing your speed by 40 mph saved 4 hours on your return. Th

Sholpan [36]

<u>Answer:</u>

An equation that relates the speeds of the two legs of the trip

$\frac{640}{x-40}+\frac{640}{x}=4$

<u>Explanation:</u>

Given, we have to use x to represent the speed on the second leg

Speed on first leg when increasing your speed by 40 mph will be (x-40)

Distance is given as 640 miles and time is calculated as

$\text { Time }=\frac{\text { Distance travelled }}{\text { speed }}$

According to the question, increasing speed saved four hours

Therefore, the equation that relates the speeds of the two legs of the trip will be

$\frac{640}{x-40}+\frac{640}{x}=4$

5 0

4 years ago

How do you write 21% as a fraction, mixed number, or whole number?

saul85 [17]

Answer:

21/100 = .21 = 21%

Step-by-step explanation:

8 0

3 years ago

Emily added 5 grams of water into 20 grams of 50% salt solution. She made ___ grams of ___% salt solution.

Emily added 5 grams of water into 20 grams of 50% salt solution. She made _ grams of _% salt solution.