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Question 465362: How much water must be evaporated from 32 ounces of a 2% salt solution to make a 8% salt solution?
Click here to see answer by robertb(5830)

Question 422603: An advertisement for a grape juice claims that the drink contains 10 percent grape juice. How much pure grape juice would need to be added to 5 quarts of drink to obtain a mixture containing 40 percent grape juice
Click here to see answer by jorel1380(3719)

Question 421763: mr. bloop is rolling small steal disks down a ramp. each disk is 4cm in diameter and 5mm thick. it takes 7 seconds to go down the ramp and the distance traveled from the top to the bottom of the ramp is 119cm. how many revolutions does a disk make on the way down? round your answer to the nearest hundreath.
Click here to see answer by jorel1380(3719)

Question 443268: Show all work
A community 5K run will aware 50.00 to the winner. 50 people enter the race and they each pay an entry fee of 20.00 Assuming they are all equally likely to win, what is a fair price for the competition.
Click here to see answer by jorel1380(3719)

Question 465541: if 120L of an acid solution is 75% acid how much pure acid is in the mixture
Click here to see answer by jorel1380(3719)

Question 465893: Set up the necessary equation(s) and solve algebraically.
two numbers which differ by 3, have a product of 88. Find the numbers.
Click here to see answer by jorel1380(3719)

Question 466300: Teas costing $7 per pound are to be mixed with teas costing $4 per pound to make a 30-pound mixture. If the mixture is to sell for $6 per pound, how many pounds of each kind of tea should be used?
Click here to see answer by nerdybill(7384)

Question 463867: A chemist has to mix two chemicals, A and B, to make 150 grams of a solution. This solution requires 10 grams of A or every gram of B. If the amount of chemical A is designated as x and the amount of Chemical B is designated y, what equation would you use to find out how much of each chemical she will need.

Click here to see answer by jorel1380(3719)

Question 465898: how many ounces of a 45% alcohol solution must be mixed with 5 ounces of a 50% alcohol solution to make a 46% alcohol solution
Click here to see answer by jorel1380(3719)

Question 466369: Help I need help answering this question, Im in college Algebra!
Suppose that you have a supply of a 35% solution of alcohol and a 65% solution of alcohol. How many quarts of each should be mixed to produce 30 quarts that is 60% alcohol?
35% solution=___________qt
65% solution=___________qt
Click here to see answer by stanbon(75887)

Question 466370: Solve the problem by setting up and solving an appropriate algebraic equation.
How many milliliters of pure acid must be added to 150 milliliters of a 40% solution of acid to obtain a 50% solution?
_________ml
Click here to see answer by stanbon(75887)

Question 466529: an automobile director contains 8 liters of solution that 10% is antifreeze. How many liters of water must be drained and replaced with pure antifreeze to obtain a 25% antifreeze mixture?
Click here to see answer by lwsshak3(11628)

Question 466639: If you invested $7,363, and you receive $370 in interest, what annual interest rate did you receive on your investment? If necessary, round your answer to the nearest hundredth.
Click here to see answer by rfer(16322)

Question 466640: A saline solution is 20% salt. How many gallons of water must be added to dilute the mixture to 8 gals of a 15% saline solution?
Click here to see answer by lwsshak3(11628)

Question 466640: A saline solution is 20% salt. How many gallons of water must be added to dilute the mixture to 8 gals of a 15% saline solution?
Click here to see answer by solver91311(24713)

Question 466638: How many liters (L) of a 20% alcohol solution must be mixed with 60 L of a 90% alcohol solution to get a 50% alcohol solution?
Click here to see answer by lwsshak3(11628)

Question 466582: Hello,
I have a question I need help with. Your time is appreciated.
How many gallon of a 5% acid solution must be mixed with 30 gallons of 10% acid solution to obtain a mixture that is 8% acid?
Thank you
Click here to see answer by ankor@dixie-net.com(22740)

Question 466833: 1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by (Hint: if it is 10%, substitute 10 instead of x, not 10% or 0.1). Round your answers to the nearest tenth (of a million).
a. What is the cost to remove 42% of the pollutant?
b. What is the cost to remove 66% of the pollutant?
c. What is the cost to remove 98% of the pollutant?
d. For what value is this equation undefined?
e. Do the answers to sections a. through d. match your expectations? Explain why or why
Click here to see answer by Ryan O'Hara(46)

Question 420305: The ratio red candy to green candy in a bag is 3 to 4. If there were 36 pieces of green candy in the bag, how many peices of candy in the bag were red?
Click here to see answer by jorel1380(3719)

Question 420752: Cashews sell for $4/lb and peanuts sell for $2/lb. How many lbs of each would you use to make 10lbs of a mixture that sells for $2.90/lb?
Click here to see answer by jorel1380(3719)

Question 419984: one angle of a parallelogram is 12 degrees less than three times the measure of the angle next to it. find the measure of each angle of the parallelogram.
Click here to see answer by jorel1380(3719)

Question 419975: in a recent election brown recieved 13611 more votes than bill. if the total number of votes was 119117, find the number of votes for each
Click here to see answer by jorel1380(3719)

Question 419850: A 50 mL solution of acid in water contains 25% acid. How much water needs to be added in order to make a 5% acid solution?
Click here to see answer by jorel1380(3719)

Question 421444: Mindy has 49 nickels and dimes altogether worth $2.80. Find out how many she has of each coin
Click here to see answer by jorel1380(3719)

Question 419630: Thirty pounds of mixed nuts sells for $6.10 per pound. The mixture is obtained from two kinds of nuts, walnuts priced at $6.50 per pound and peanuts at $5.90 per pound. How many pounds of each variety of nut are used in the mixture?
Click here to see answer by jorel1380(3719)

Question 466616: A mixture of 40 liters of milk and water contains of 10% water. how much water must be added to make 20% of water in the new mixture?
Click here to see answer by jorel1380(3719)

Question 419032: How much ounces of vegetable oil containing 8% saturated fats must be mixed with 25 ounces of solution containing 90% olive oil to blend a salad dressing which is 54% olive oil?
Click here to see answer by jorel1380(3719)

Question 419023: a 25 liter solution of alcohol in water is 72% alcohol.How many liters of an 80% solution must be added if the final solution is to be 75% alcohol?
Click here to see answer by jorel1380(3719)

Question 419322: The 4H club is having its fundraising dinner. Adults pay $20 apiece and children pay $15 apiece. If the number of adult tickets sold is twice the number of children's tickets sold, and the total income for the dinner is $1,650, how many of each kind of ticket did the 4H club sell?
Click here to see answer by jorel1380(3719)

Question 418776: the original mixture weighed 800 pounds and was 40% slaked lime. how much of a 20% slaked lime mixture sh9ould be added to reduce the lime concentration to 36%?
Click here to see answer by jorel1380(3719)

Question 418488: Misty wishes to obtain 85 oz of a 40% solution by combining a 72% acid solution with a 25% acid solution. How much of each solution should Misty use.
I have gotten the equation of ".72x+.25(85-x)=34" but am not sure if that is correct. I also need to illustrate it so if you have any ideas, i would appreciate the help.
Click here to see answer by jorel1380(3719)

Question 418389: a grocer mixes a premium blend worth $17 per kilogram with a blend worth $7 per kilogram to make 36 kilogram blend worth $11 per kilogram. how many kilograms of each type are included?
Click here to see answer by jorel1380(3719)

Question 421700: An art teacher has 5 gallons of a paint mixture that is 80% paint and 20% water. If she needs to thin the paint mixture so that it is 20% paint and 80% water,how many gallons of water must she add?
Click here to see answer by jorel1380(3719)

Question 421702: Andre has 8 polished rocks at home. How many ways can he choose 4 of them to take to a rock and gemstone show?
Click here to see answer by jorel1380(3719)

Question 418251: A pound of tin is worth $1 more than a pound of copper. Four pounds of tin are mixed with 6 pounds of copper to make bronze that sells for $3.65 per pound. How much is a pound of tin worth?
Click here to see answer by jorel1380(3719)

Question 417854: Approximately how much of a 50% salt water solution should be added to 1 liter of unsalted water to create a 26% salt water solution?
Click here to see answer by jorel1380(3719)

Question 418243: A store sells bluegrass seed for $6 per pound and rye grass seed for $3 per pound. How much rye grass must be mixed with 100 pounds of bluegrass to obtain a blend that will sell for $5 per pound?
Click here to see answer by jorel1380(3719)

Question 466907: How many gallons of 50% antifreeze solution must be mixed with 100 gallons of 30% antifreeze to get a mixture that is 40% antifreeze?
Click here to see answer by stanbon(75887)

Question 417853: In mixing some fuel, a scientist combines 50% ethanol solution with a 90% ethanol solution to get 40 liters 80% ethanol solution. How much of the 50% solution did the scientist use in the mixture?
Click here to see answer by jorel1380(3719)

Question 417446: The problem I am trying to solve is as follows:
You need to compound lansoprazole suspension in a concentration of 3mg/mL. In this suspension you will need lansoprazole 30 mg capsules and sodium bicarbonate 8.4% solution. If you need 480 mL, how many capsules of lansoprazole will you need?
I have tried various ways to arrive at the answer, such w/v formula, the Q1,Q2,C1,C2 formula. I have tried setting up various proportions formulas. I have changed mg to g. Please explain to me step by step how to solve this problem. Is it a 2 step problem?
Click here to see answer by jorel1380(3719)

Question 417268: A chemist has 400 milliliters of a solution that is 40% water and 60% chlorine. She wants a solution that is 50% water and 50% chlorine. How many milliliters of water should she add to the solution?
Click here to see answer by jorel1380(3719)

Question 467049: A video store received two shipments of video cassettes. The value of the first shipment, which contained eight 4-hour and sixteen 8-hour cassettes, was $296. The value of the second shipment, which contained six 4-hour and eighteen 8-hour cassettes was $252. Find the x, the cost of a 4-hour cassettes and y, the cost of an 8-hour cassette.
Click here to see answer by josmiceli(19441)

Question 467150: how many liters of a 10% alcohol solution must be mixed with 40 L of a 50% solution to get a 40% solution
Click here to see answer by mananth(16946)

Question 467172: problem #1
How many kilograms of each of a 50% silver alloy and 10% silver alloy must be mixed to obtain 24 kilograms of a 25% silver alloy?
problem #2
Two vats contain cream, one sample tested 8% butterfat and the other tested 16% butterfat. How much cream should be taken from each to produce a 5 liters mixture which will test 12% butterfat?
problem #3
How many kilograms each of a powdered detergent and a rinsing solution containing 80% of the pure rinsing solution must be mixed to make 140 kilograms of a 24% detergent?
I'll be waiting for the answer and solution
Click here to see answer by Big Poop(157)

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