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Question 669862: How many gallons of a 50% acid solution must be mixed with 40 gallons of a 19% solution to obtain a solution that is 40% acid?
Click here to see answer by mananth(16946)

Question 670085: how much of an alloy that is 30 percent should be mixed with 600 ounces of an alloy that is 70 percent copper in order to get an alloy that is 50 percent copper
Click here to see answer by stanbon(75887)

Question 670216: A chemist needs 150 milliliters of a 44% solution but has only 24% and 99% solutions available. Find how many milliliters of each that should be mixed to get the desired solution.
Click here to see answer by ankor@dixie-net.com(22740)

Question 670499: A 12 liter mixture is 60% alcohol. If 8 liters of a 25% alcohol mixture are added,what percent mixture will be formed?

Click here to see answer by mananth(16946)

Question 670523: A boat owner mixes together oil and gasoline to make 40 gallons of fuel for his boat. The mixture must be 2% oil and 98% gasoline. Oil costs $64 per gallon and gasoline costs $2.50 per gallon. If the total cost for the fuel was $149.20, how much oil did he buy?
Click here to see answer by twinzmom(5)

Question 670466: what is 35 x 2.5%
Click here to see answer by twinzmom(5)

Question 670594: Working alone, Ryan can dig a 10ft. by 10 ft. hole in five hours. Castel can dig the same hole in six hours. How long would it take them if they worked together?
Click here to see answer by ewatrrr(24785)

Question 670738: A doctor orders a 25 mL of a 0% solution. The pharmacist has available a 30% mixture and an 80% mixture. How many milliliters of each should be mixed to produce this 25 mL dosage?
Click here to see answer by ewatrrr(24785)

Question 498997: Given the numbers 1 - 9; arrange them so that the sum of two 3-digit numbers equals a 3 digit number
Click here to see answer by elrazky1(1)

Question 670719: You need a(n) 2% acid solution, and you'll get it by adding a(n) 10% acid solution to 25 liters of a(n) 1% acid solution. How many liters must be added? The amount of the 2% solution to be added is ? liters??
You need a(n) 5% acid solution, which you'll get by adding a(n) 16% acid solution to 21 liters of a(n) 3% acid solution. How many liters must be added?
The amount of the 16% solution to be added is ? liters.
Click here to see answer by Theo(13342)

Question 670910: a chemist needed a 75% acid solution but only has 35% acid and 85% acid solutions. if he uses 120 ml of the 85% solution, how much of the 35% solution is needed to make the 75% solution
Click here to see answer by stanbon(75887)

Question 670978: The question is asking how I can change a recipe that makes 24 brownies. Into a recipe that makes 16 brownies
Click here to see answer by josmiceli(19441)

Question 671080: lockers in a row are numbered 1,2,3,...1000. all the lockers are closed until a person walks by and opens all the lockers 2,4,6...998,1000. Then another person walks by and changes the state of every third locker. changing the state meaning opening closed lockers and closing opened lockers but only on every third locker. then, another person walks up and changes the state of every fourth locker.which lockers are closed?
Click here to see answer by AnlytcPhil(1806)

Question 671196: how much pure acid is in 780 milliliters of a 11% solution
Click here to see answer by Alan3354(69443)

Question 671405: how many quarts of pure antifreeze must be added to 4 quarts of a 30% antifreeze solution to obtain a 60% antifreeze solution?
Click here to see answer by stanbon(75887)

Question 671418: A mixture of 6% disinfectant solution is to be made from 7% and 3% disinfectant solutions. How much of each solution should be used if 36 gallons of 6% solution are needed?
Click here to see answer by Alan3354(69443)

Question 671723: Explain the difference between finding the following two solutions:
What is 15% of 50?
50 is 15% of what?

Click here to see answer by checkley79(3341)

Question 671797: I have a mixture problem for Basic Algebra that I'm having trouble figuring out.
The problem is: You need 25 liters of a 12% salt solution. To get it, you'll mix a 4% solution with a 19% solution. How many liters of each will you need. I have tried many times to solve this problem, but I keep getting a negative number.
Click here to see answer by Alan3354(69443)

Question 671845: Find the cost per ounce of sunscreen made from of 130 oz. of lotion that cost$3.44 per ounce and 90 oz of lotion that cost $10.04 per ounce
Click here to see answer by ewatrrr(24785)

Question 671891: how many liters of each of a 12% iodine solution and a 30% solution must be used to produce a total mixture of 90 liters and of 22% iodine solution
Click here to see answer by ewatrrr(24785)

Question 671868: A pharmacist wishes to mix a solution that is 3% minoxidil. She has on hand 70ml of a 1% solution and wishes to add some 5% solution to obtain the desired 3% solution. How much 5% solution should she add?
Click here to see answer by Alan3354(69443)

Question 671926: How many dumplings I can make with 44 lbs of flour if each dumpling is 11 grams?
Click here to see answer by ankor@dixie-net.com(22740)

Question 672006: You need to make 25.0 grams of a solution of salt and water. This solution is to be 15% salt. How would you make it?
Click here to see answer by josmiceli(19441)

Question 672301: How many ml of 40 percent acid should be added to pure acid to make 75 ml of 65 percent acid?
Click here to see answer by sachi(548)

Question 672381: solution A is 2% alcohol. solution B is 6% alcohol A service station owner wants to mix the two to get 60 liters of a solution that is 3.2% alcohol How many liters of each should he mix
Click here to see answer by stanbon(75887)

Question 672461: How many liters of a 12% acid solution and a 20% acid solution should be mixed in order to obtain 4 liters of a 15% acid solution?
Click here to see answer by mananth(16946)

Question 672631: If copper is worth $8 per kilogram, what is the value of the copper in 10 cubic kilometers of seawater?

Click here to see answer by Alan3354(69443)

Question 673146: Nancy received grades of 72, 83, and 91 on three math exams. What grade must she receive on the fourth exam so that she has at least an 80 average?
Click here to see answer by rm29924(97)

Question 673258: How many grams of solute are there in 100ml of a 15% solution?
Can you show me step by step on how to get the answer to this math question please? thank you
Click here to see answer by solver91311(24713)

Question 674056: How many gallons of a 40 percent solution must be mixed with 60 gallons of a 22 percent solution to obtain a solution that is 30 percent alcohol?
Click here to see answer by stanbon(75887)

Question 674057: if chewey candy costs 1.50 per pound how much will 1 pound be

Click here to see answer by MathLover1(20850)

Question 674251: How much salt is there in 50 gallons of a 3% salt solution?
Click here to see answer by ewatrrr(24785)

Question 674714: how many liters of a 60% acid solution must be mixed with a 10% acid solution to get 400 L of a 50% acid solution
Click here to see answer by checkley79(3341)

Question 675133: : one canned juice drink 30% orange juice, another is 10% orange juice. How many liters of each should be mixed together in order to get 20L that is 27% orange juice.
Click here to see answer by ewatrrr(24785)

Question 675103: A 10lb bag of mixed nuts contains 20% peanuts. How many pounds of peanuts should be added to change the mixture to 80% peanuts?
Click here to see answer by lynnlo(4176)

Question 675229: If there are 2 1/2 cups of regular sugar and 1/4 brown sugar for a recipe that serves 8, how much of each sugar would it take to feed 12? I cannot figure out how to set this up.
Also If a construction company paid its employees 14.50 an hour to to build 12 houses, how much should the company expect to pay its workers if it needs to build 20?
thank you...
Click here to see answer by ReadingBoosters(3246)

Question 675606: Point A and point B are 270 miles apart. One jogger is at point A, and another jogger is at point B. Both joggers begin running toward each other at the same time. Jogger A runs 13 mph while jogger B runs 17 mph. How many hours before the two joggers meet?
Click here to see answer by josmiceli(19441)

Question 675973: Jones has a 90% solution of boric acid in his pharmacy, which he reduces to the required strength by adding distilled water. How much solution and how much water must he use to get 2 quarts of 10% solution?
Click here to see answer by josmiceli(19441)

Question 676013: ok....Suppose that a 12 quart radiator contains a 20% solution of antifreeze. how much solution needs to be drained out and replaced with pure antifreeze to obtain a 40% solution of antifreeze....
Click here to see answer by nerdybill(7384)

Question 676363: An automobile radiator holds four gallons and contains 25% antifreeze. How much of the solution must be drained from the radiator and antifreeze added to make the solution test 35% antifreeze?
Click here to see answer by stanbon(75887)

Question 676395: I am very confused. My question is, How many pounds of nuts costing $2.50 per pound should be mixed with 2 pounds of nuts costing $4.50 per pound to obtain a mixture costing $3.00 per pound? I do not understand how to get an equation from that.

Click here to see answer by josmiceli(19441)

Question 676582: A dealer has tea worth $1.20 a pound and tea worth $1.90 a pound. How many pounds of each kind must he use to make 70 pounds that can be sold for 1.50 per pound?
Click here to see answer by ewatrrr(24785)

Question 676569: How much distilled water will be needed to make an 8 oz. solution that is 80% Alcohol from 100% alcohol?
Click here to see answer by ptaylor(2198)

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