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
mars1129 [50]
3 years ago
5

How many gallons of pure water should be evaporated from 160 gallons of a solution containing 12% salt so that the remaining sol

ution contains 20% salt?
What are you being asked to find in this problem?

gallons of pure water

gallons of 12% salt solution

gallons of 20% salt solution
Mathematics
2 answers:
Mnenie [13.5K]3 years ago
8 0

<u>Answer:</u>

The correct answer option is: 'gallons of pure water'.

<u>Step-by-step explanation:</u>

We are asked to find the number of gallons of pure water in this problem.

We know that the amount of salt that exists in the solution before the pure water is evaporated (0.12)(160) has to be equal to the amount of salt which is there after the evaporation takes place (0.20)(160-x).

Therefore, the number of gallons of pure water can be found using this equation:

(0.12) (160) = (0.20) (160-x)

algol [13]3 years ago
6 0

Answer:  It is asking the amount of pure water.

Amount of  pure water evaporated is 64 gallons .

Step-by-step explanation:

Let x gallons  be the amount of evaporated water.

Amount of water before evaporation

      =12% of 160

      = 0.12(160) = 19.2 gallons .......(1)

amount of solution after x gallon water evaporation  = 160-x

amount of salt in 160-x  solution =   20% of 160-x

                                                     =0.2 (160-x) ........... (2)

Since amount of salt will be same before and after evaporation

  from (1 )  and (2)

0.2(160-x) = 19.2

32-0.2x = 19.2

  -0.2x = 19.2-32

 -0.2x = -12.8

       x = -12.8/(-0.2)

       x   = 64  gallons


                 



You might be interested in
Join my zoo..m <br> id: 492-462-4495<br> pw: H72URu
seropon [69]

Answer:

suuurrre vast resvon!!!!!!!!

3 0
2 years ago
Read 2 more answers
Estimate 53.83-36.464 by first rounding each number to the nearest whole number.
Free_Kalibri [48]

Answer:

18

Step-by-step explanation:

53.83 rounds to 54

36.464 rounds to 36

54-46=18

7 0
3 years ago
Read 2 more answers
Write the following using index notation<br><br>2 x 9 x 9 x 9 x 2 x 9​
taurus [48]
9^4 not totally sure tho
4 0
3 years ago
What is the solution to 4+ 5ex+2 11?
BlackZzzverrR [31]

Answer:

x= 1/e or x= 0.367

Step-by-step explanation:

:))) Your welcome

3 0
3 years ago
Read 2 more answers
$1900 at 9 for 2 years
vekshin1

Answer:

$342

Step-by-step explanation:

Complete question

Find the simple interest on $1900 at 9% for 2 years.

Simple interest PRT/100

Given

Principal P = 1900

Rate R = 9%

Time T = 2years

Substitute

Simple interest = 1900*9*2/100

Simple interest  = 19*18

Simple interest  = $342

Hence the simple interest on $1900 at 9% for 2 years is $342

7 0
3 years ago
Other questions:
  • Mrs. Trujillo bought 400 shares of a company's stock for $42.98/share. She pays a broker a commission of $16 to buy and sell sto
    12·1 answer
  • How many cups is equal to a quart
    5·2 answers
  • ASAP!!! HELP!!!!
    9·2 answers
  • 12 is 15% of what?<br> HELP
    10·1 answer
  • Sam has worn a green shirt on 10 of the last 20 days. Considering this data, how many times would you expect Sam to wear a green
    14·1 answer
  • Please answer asap!!!!!!!!!!!!!!!!!!1
    11·2 answers
  • What is the slope of the line that contains the points (6,4) and (13,5)
    6·2 answers
  • Need help on worksheet
    6·2 answers
  • Solve the equation and enter the value of x below.<br> 8x + 11 = 35
    15·2 answers
  • The sum of three consecutive numbers is equal to 4 times the largest number minus 29. What is the smallest of the three numbers?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!