SOLUTION: A 40L solution of salt water contains 15% salt. What is the least amount of water that can be added to form solution that is no more than 5% salt?
Algebra.Com
Question 797925: A 40L solution of salt water contains 15% salt. What is the least amount of water that can be added to form solution that is no more than 5% salt?
Found 2 solutions by stanbon, MathTherapy:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A 40L solution of salt water contains 15% salt. What is the least amount of water that can be added to form solution that is no more than 5% salt?
-------------
Equation:
water + water = water
0.85*40 + 1*x = 0.95(40+x)
-------
85*40 + 100x = 95*45 + 95x
-----------------
5x = 10*45
x = 90L (amt. of water needed)
---------------------------
Cheers,
Stan H.
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!
A 40L solution of salt water contains 15% salt. What is the least amount of water that can be added to form solution that is no more than 5% salt?
Water (W) added should be AT LEAST L, or
You can do the check!!
Send comments, “thank-yous,” and inquiries to “D” at MathMadEzy@aol.com. Further help is available, online or in-person, for a fee, obviously.
For FREE info and answers to questions about the ASVAB exam, the NYS 3 – 8 city/state wide exams, GENERAL MATH QUESTIONS, MATH HOMEWORK QUESTIONS, or MATH QUESTIONS related to the Regents Integrated Algebra, Regents Geometry, Regents Algebra 2/Trigonometry, SHSAT, COOP/HSPT/TACHS, PSAT, SAT, ACT, SSAT/ISEE, GRE, CLEP, and the GED, you can visit: http://asvabstudyzone.freeforums.net/.
RELATED QUESTIONS
A certain solution of salt water is 15% salt and weighs 35 pounds. How much salt must be... (answered by rapaljer)
a certain solution of salt water is 15% salt and weighs 35 pounds. how much salt must be... (answered by josmiceli)
A 20-gallon salt-water solution contains 15% pure salt. How much water should be added... (answered by mananth,Maths68)
How many ounces of pure water must be added to 75 oz of a 20% salt solution to make a... (answered by Fombitz)
Twenty pounds of a salt-water solution contains fifteen percent salt. How much water must (answered by oscargut)
Thirty pounds of a salt-water solution contains fifteen percent salt. How much water must (answered by hokies,richwmiller)
Thirty pounds of a salt-water solution contains fifteen percent salt. How much water must (answered by josmiceli)
What is the strength of a salt solution that contains 12 gallons of salt and 18 gallons... (answered by longjonsilver)
A 18 gallon salt-water solution contains 15% pure salt. how much pure salt should be... (answered by josgarithmetic)