How much water must be evaporated from 64 ounces of a 2% salt solution to make a 10% salt solution?

Q: What amount of a 80% acid solution must be mixed with a 20% solution to produce 400 mL of a 50%…

A: Topic - percentage and equation in one variable

Q: A grocer is mixing 40 cent per lb. coffee with 60 cent per lb. coffee to make a mixture worth 54…

A: Given ,  A grocer is mixing 40 cent per lb. coffee with 60 cent per lb. coffee to make a mixture…

Q: Mildred, a pharmacist, was required to prepare 10 L of a 40% alcohol solution by mixing the flowing.…

A:

Q: How much of a 70% orange juice drink must be mixed with 44 gallons of a 20% orange juice drink to…

A: Let x gallons of 70% orange juice drink must be mixed with 44 gallons of a 20% orange juice drink to…

Q: How many liters of a 60% acid solution must be added to 14 liters of a 10% acid solution to produce…

A: Given Let

Q: A single serving of a cereal breakfast bar contains 18 grams of carbohydrates. This is 6% of the…

A: Let x grams of carbohydrates are recommended each day for a person on a 2000-calorie diet.

Q: How many gallons of a 4% salt solution must be mixed with 65 gallons of a 26% solution to obtain a…

A:

Q: How many units of a 10% solution are needed to prepare 500 units of a 20% solution?

A:

Q: How many liters of 40% acid solution must be mixed with 10 liters of a 65% acid solution to get a…

A: Given Let Then according to problem

Q: How many pounds of coffee worth $7 per pound should be added to 14 pounds of coffee worth $4 per…

A: Here we have to find the pounds of 7$ cofee to be mixed

Q: A 20 LITER MILK CONTAINS 2%BUTTERFAT HOW MANY LITERS OF BUTTERFAT BE ADDED TO PRODUCE A MIXTURE…

A: 2% of 20 lts = 2100x20                      = 4/10                      = 0.4 lts

Q: what amount of a 60% acid solution must be mixed with a 30% solution to produce 300mL of a 50%…

A: Consider x be the amount of 60% solution in ml then (300 – x) ml 30% solution will be used to…

Q: How many gallons of milk containing 1% fat is mixed with milk containing 4% fat to obtain a 15…

A: A mixture word problem is solved by setting up the corresponding mathematical model. If x amount of…

Q: How much water should be added to 30 gallons of a solution that is 70% antifreeze to get a mixture…

A: Given: Pure water=70% antifreeze

Q: How many litres of a 10% alcohol solution must be mixed with 10 litres of a 34% alcohol solution to…

A: Given that  10% alcohol solution must be mixed with 10 litres of a 34% alcohol solution to get a 13%…

Q: How much water must be evaporated from 240 gallons of a 3% salt solution to produce a 5% salt…

A: Let  the amount of water to be evaporated be x first we have 240 gallons of 3% salt i.e 7.2 gallons…

Q: How many gallons  of a 6% salt solution must be mixed with 10 gallons  of a 8% solution to obtain a…

A: Let x denote Gallon. So, gallons of a 6% salt solution are calculated as (x gal) (6%).

Q: How many quarts of pure antifreeze must be added to 4 quarts of a 30​% antifreeze solution to obtain…

A:

Q: A chemistry teacher needs to mix a 40% salt solution with a 80% salt solution to make 20qt of a 50%…

A: Let the required amount of 40% salt solution be x quarts.

Q: A nurse mixes 60 cc of a 50% saline solution with a 10% saline solution to produce a 25% saline…

A: Let us assume that, x amount of 10% solution used.  60 cc = 50% solution  x = 10% solution  When we…

Q: How many quarts of pure antifreeze must be added to 3 quarts of a 40% antifreeze solution to obtain…

A: ⁸

Q: A 12-ton mixture consists of one-sixth sand, two-sixths gravel, and one-half cement. If x tons of…

A:

Q: A grocer is mixing 40 cent per lb. coffee with 60 cent per lb. coffee to make a mixture worth 54c…

A: Let x lb of 40 cent coffee and (70-x) lb of 60 cent coffee should be mixed.  So total cost is:…

Q: A chemist needs to mix a 36% salt solution with a 77% salt solution to make 40 liters of a 53% salt…

A: Consider the provided question, A chemist needs to mix a 36% salt solution with a 77% salt solution…

Q: A chemist needs to mix a 12% acid solution with a 20% acid solution to obtain 160 ounces of a 15%…

A: Given: A chemist needs to mix a 12% acid solution with a 20% acid solution to obtain 160 ounces of a…

Q: One bag of potting soil contains 8 quarts of soil. How many clay pots can be filled from one bag of…

A: We have to find that how many clay pots can be filled from one bag of potting soil. Given - 1 bag of…

Q: How many pounds of a 4% solution of borax must be added to 24 pounds of a 12% solution of borax to…

A:

Q: Pure acid is to be added to a 10​% acid solution to obtain 36L of a 40​% acid solution. What amounts…

A: We need to find the amounts of each acid.

Q: A tank contains 8000 liters of a solution that is 40% acid. How much water should be added to make a…

A:

Q: How much of a 90% orange juice drink must be mixed with 12 gallons of a 40% orange juice drink to…

A: To be found : Amount of a 90% orange juice drink must be mixed with 12 gallons of a 40% orange juice…

Q: How much pure acid should be mixed with 6 gallons of a 50% acid solution in order to get an 80% acid…

A:

Q: How many quarts of pure antifreeze must be added to 6 quarts of a 30​% antifreeze solution to obtain…

A: Definition used-   Word problem with one unknown – First we write the equation in terms of an…

Q: One and one half ounces of a medication are required for a 140 pound adult. At the same rate, how…

A: Given  Medication required for 140 pound adult = 1.5 ounces Let the medication required for 238…

Q: A laboratory assistant wants to make 10 liters of 40% acid solution. If solutions of 50% and 25% are…

A: Given: 50% and 25% solution of acid are available in the laboratory We have to make 40% acid…

Q: One and one half ounces of a medication are required for a 160-pound adult. At the same rate, how…

A:

Q: One and one-half ounces of a medication are required for a 180-pound adult. At the same rate, how…

A: One and one-half ounces of a medication are required for a 180-pound adult.Consider x as the…

Q: How many gallons of a 4% salt solution must be mixed with 75 gallons of a 6% solution to obtain a 5%…

A:

Q: A chemist must mix 10L of a 40%acid solution with some 70% solution to get a 50% solution. How much…

A: A chemist must mix 10L of a 40%acid solution with some 70% solution to get a 50% solution. Let x L…

Q: How many ounces each of a 12% alcohol solution and a 30% alcohol solution must be combined to obtain…

A: A detailed solution is given below

Q: How many liters of a 40% alcohol solution must be mixed with 25 liters of a 89% alcohol solution to…

A:

Q: What quantity of 80% acid solution must be mixed with a 20% solution to produce 400ml of a 60%…

A: Given we need to form a 400 ml of a 60% solution by mixing 80% acid solution with 20% solution.Let…

Q: How many cups of pure water should be mixed with 6.5 cups of a 30% acid solution to dilute it into a…

A: Given    6.5 cups of 30% acid solution to dilute it ito a 2% acid solution.

Q: How many quarts of pure antifreeze must be added to 3 quarts of 10% antifreeze soulotion to obtain a…

A:

Q: What quantity of 70 percent acid solution must be mixed with a 30 percent solution to produce 600 mL…

A:

Q: A pharmacist wants to mix a 30% saline solution with a 10% saline solution to get 200 mL of a 12%…

A: Let x be the amount of 30% saline solution and y be the amount of 10% saline solution.

Q: A barista needs to mix a 20% coffee solution with concentrated coffee (100%) to produce 9 liters of…

A: Let x be the amount in liters of mixture of concentration 20% and y be the amount in liters of…

Q: How many quarts of pure antifreeze must be added to 7 quarts of 40% antifreeze solution to obtain a…

A: Let us add x quarts of pure antifreeze to the 7 quarts of 40% antifreeze, to achieve 50% antifreeze…

Q: In an animal sanctuary, it takes 44 kg of meat per year to feed 4 dogs. How many kg of annual meat…

A:

Q: What amount of a 60% acid solution must be mixed with a 35% solution to produce 300 mL of a 55%…

A:

Q: What quantity of a 70% acid solution must be mixed with a 40% solution to produce 150 mL of a 60%…

A: Given.

Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.