1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mars2501 [29]
1 year ago
10

How much water must be evaporated from a 70 oz, 15% saline solution to produce a 25% saline solution? Round your final answer to

1 decimal place if necessary.
Mathematics
1 answer:
icang [17]1 year ago
3 0

Answer:

28 oz of water

Explanation:

Percentage of salt in the original solution = 15%

Let the amount of water to be evaporated = w

If we remove w oz of water from 70 oz solution, the resulting solution contains:

25\%\text{ of }(70-w)\text{ salt}

So, we have the equation:

0.15(70)=0.25(70-w)

We then solve for w:

\begin{gathered} 10.5=17.5-0.25w \\ \implies0.25w=17.5-10.5 \\ 0.25w=7 \\ Divide\text{ both sides by 0.25} \\ \frac{0.25w}{0.25}=\frac{7}{0.25} \\ w=28 \end{gathered}

Thus, 28 oz of water must be evaporated from a 70 oz, 15% saline solution to produce a 25% saline solution.

You might be interested in
What is the common ratio of these numbers written as a fraction <br> 768,480,300,187.5
kolbaska11 [484]

Answer:

Step-by-step explanation:

im pretty sure it is 768/187.5 = about 4

because you are taking the highest number and putting it over the lowest number

4 0
3 years ago
Try one last time
Ierofanga [76]

Answer:

$144

Step-by-step explanation:

divide 272 by 17 and then multiply that answer by 9

272/17 is 16

so 16 dollars an hour

multiply that by 9

you get 144

3 0
3 years ago
A scuba diver dove from the surface of the ocean to an elevation of −89 9/10
Elden [556K]

Answer:

he rose by 71 feet and it took him 6.88 mins to do so.

Step-by-step explanation:

So we know that the diver is going up in elevation cause he is ascending and he ascended 71 ft. Along with the fact that the total dive was 20 1/8 mins with roughly converts to 20.13 mins and if we take that number and subtract the amount of time he stayed at the elevation of 71ft we know that it took him 6.88 min to rise to the elevation of -18.9.

5 0
3 years ago
Read 2 more answers
Numbers 43 and 44 can I help with them
Genrish500 [490]
D and a is the answer I'm pretty sure. Hope this helps!
7 0
3 years ago
Read 2 more answers
In triangle abc , with explanations steps
Rus_ich [418]

Answer:

c is hypotenuze,a is the smallest , b is the one who is left

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • 7. Ben's earnings for work he did from Monday through Saturday were: $78,
    14·1 answer
  • The height of the Empire State building measured to the top of the lightning rod is approximately 443.1 meters. What is this hei
    15·1 answer
  • What is the simplified expression for -3cd - d(2c - 4) - 4d?
    6·2 answers
  • A leaky faucet wastes 3600 gallons of water per year how many quarts of water are wasted per month [1 gallon = 4 quarts]
    6·1 answer
  • A survey went out asking consumers about their shopping habits. The results showed that
    13·2 answers
  • You lose one quarter, two dimes, and two nickels.
    8·2 answers
  • Estimate: 5.56 x 32.958
    10·2 answers
  • Josefina's check at Sun Bistro is $26.70. In order to leave a 24% tip, how much should she pay? Round to the nearest cent.
    15·1 answer
  • P1=1*1!<br> P2= 1*1! + 2*2!<br> P3=1*1! + 3*3!<br> Make a general rule for Pn.
    14·1 answer
  • *HELP* *NEEDS IT ALSO TODAY RIGHT NOW*<br><br> Compare.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!