A biologist has two brine solutions, one containing 4% salt and another containing 20% salt. How many milliliters of each solution should he mix to obtain 2000 ml of a solution that contains 8% salt? He needs 4500 ml from the solution that contains 4% salt and ml from the solution that contains 20% salt.

A biologist has two brine solutions, one containing 4% salt and another containing 20% salt. How many milliliters of each solution should he mix to obtain 2000 ml of a solution that contains 8% salt? He needs 4500 ml from the solution that contains 4% salt and ml from the solution that contains 20% salt.

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter2: Equations And Inequalities

Section2.3: Models And Applications

Problem 22SE: A chemistry teacher needs to mix a 30% salt solution with a 70% salt solution to make 20 qt of a 40%...

See similar textbooks

Similar questions

A custom-blend bird seed is made by mixing two types of bird seeds costing $0.75 per pound and $1.25 per pound. How many pounds of each type of seed mixture are used to make 200 pounds of custom-blend bird seed costing $0.95 per pound?
Brian can lay a slab of concrete in 6 hours, while Greg can do it in 4 hours. If Brian and Greg work together, how long will it take?
A crime-scene investigator has 3.4 ounces of a sample. He needs to conduct four tests that each require 0.6 ounces of the sample, and one test that requires 0.8 ounces of the sample. How much of the sample remains after he uses it for the five tests?
Two hoses can fill a swimming pool in 10 hours. It would take one hose 26 hours to fill the pool by itself. How long would it take for the other hose, working alone, to fill the pool?
A pitcher of water at 40 degrees Fahrenheit is placed into a 70 degree room. One hour later, the temperature has risen to 45 degrees. How long will it take for the temperature to rise to 60 degrees?
A chemistry teacher needs to mix a 30% salt solution with a 70% salt solution to make 20 qt of a 40% salt solution. How many quarts of each solution should the teacher mix to get the desired result?
At a family reunion, there were only blood relatives, consisting of children, parents, and grandparents, in attendance. There were 400 people total. There were twice as many parents as grandparents, and 50 more children than parents. How many children, parents, and grandparents were in attendance?
Three coworkers work for the same employer. Their jobs are warehouse manager, office manager, and truck driver. The sum of the annual salaries of the warehouse manager and office manager is $82,000. The office manager makes $4,000 more than the truck driver annually. The annual salaries of the warehouse manager and the truck driver total $78,000. What is the annual salary of each of the co-workers?
Sara invested 2500, part of it at 4 and the rest at 6 yearly interest. The yearly income on the 6 investment was 60 more than the income on the 4 investment. How much money did she invest at each rate?