# Questions on Word Problems: Mixtures answered by real tutors!

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 Word Problems: Mixtures Solvers Lessons Answers archive Quiz In Depth

 Question 401572: The Coffee Shoppe sells a coffee blend made from two coffees, one costing \$5/lb and the other costing \$6/lb. If the blended coffee sells for \$5.60/lb, find how much of each coffee is used to obtain the desired blend. Assume that the weight of the blended coffee is 100 lb. Thank you for any help with this. Click here to see answer by ankor@dixie-net.com(15645)

 Question 401432: if I have a 12% acid solution and a 21% acid solution and i need a 8% acid solution with 101 ML how would I solve this in an algabraic equation Click here to see answer by ankor@dixie-net.com(15645)

 Question 401640: how many gallons of milk that is 2% butterfat must be mixed with milk that is 3.5% butterfat to get 10 gallons that is 2% butterfat Click here to see answer by richard1234(5390)

 Question 401697: A doctor prescribes an ointment that is 5% hydrocortisone. A pharmacist has 1% and 9% concentrations in stock. How many ounces of each should the pharmacist use to make a 1-ounce tube? Click here to see answer by edjones(7569)

 Question 402001: 60ml mixture of alcohol and iodine is 2% iodine. How much alcohol must be evaporated away to leave a mixture that is 8% iodine? Click here to see answer by robertb(4012)

 Question 402336: If you need to mix a 20% salt solution for a patient, how much salt in grams would you add to 100 ml of water (weighs 100 gms)? Click here to see answer by Tatiana_Stebko(1326)

 Question 402313: A 20 gallon solution contains 50% salt. How much pure water needs to be added in it to get a solution that contains 30% salt? Click here to see answer by ankor@dixie-net.com(15645)

 Question 402555: how many ml of a 4% saline solution must be mixed with 40ml of a 10% saline solution to get a 6% saline solution? Click here to see answer by mananth(12270)

 Question 402615: Solve the sysyem using Cramer's Rule. 2x - 3y = -13; 7x - 6y = -5 Click here to see answer by robertb(4012)

 Question 402683: how many litres of a 40% concentrated solution and a 25% concentrated solution must be mixed to obtain 79 litres of a 32% solution? Click here to see answer by mananth(12270)

 Question 402610: . Peanuts cost \$0.80 a pound, cashews \$1.50 a pound, anf alnuts \$1.50 a pound. A store clerk needs to make 6 pound of mixed nuts using these three types so the cost is \$6.90. If she wants to use 3 times as much peanuts as cashews, find how much of each type she should use. Click here to see answer by mananth(12270)

 Question 402788: need help reducing measurements in recipe by 40% 2 tbl honey 3/4 tsp salt 1 tsp paprika Click here to see answer by Alan3354(30993)

 Question 402975: What does mean: How short is the time...? Click here to see answer by stanbon(57282)

 Question 403143: How many gallons of a 40% solution must be mixed with 80 gallons of a 22% solution to get a solution with 30% Click here to see answer by scott8148(6628)

 Question 403247: How much water must be added to 75 ml of a 75% alcohol solution to obtain 45% alcohol solution? Click here to see answer by rvquartz(19)

 Question 403274: the census bureau estimates that the United States population will grow by 296 million people from 2000 to 2100 Given that the United States population in 2000 was 281 million, find the census bureau's estimate of the United States population in 2100 Click here to see answer by stanbon(57282)

 Question 403182: I want to make 50 liters of a 60% solution, but I only have a 70% solution and a 20% solution on my shelf. How much of each solution should I use? Click here to see answer by Tatiana_Stebko(1326)

 Question 403751: if i need to add 25 ml of acid to 600 ml of water what percent of acid does this give me. Click here to see answer by MathLover1(6625)

 Question 403725: a container has 2 liters of 21% solution sodium hydroxide. what is the amount and concentration you must add to this in order to end up with 7 liters of 51% solution? Click here to see answer by nerdybill(6951)

 Question 403826: A 20 gallon solution contains 50% salt. How much pure water needs to be added in it to get a solution that contains 30% salt? Click here to see answer by ankor@dixie-net.com(15645)

 Question 404028: Which of the following is the best estimate for 62% of 29 Click here to see answer by Alan3354(30993)
 Question 404028: Which of the following is the best estimate for 62% of 29 Click here to see answer by richard1234(5390)

 Question 404303: The Roasted Bean charges \$13.00 per pound for Fair Trade Organic Mexican coffee and \$11.00 per pound for Fair Trade Organic Peruvian Coffee. How much of each type should be used to make a 28-lb blend that sells for \$12.00 per pound? Click here to see answer by stanbon(57282)

 Question 404450: I need help with this problem: A pound of tin is worth \$1 more than a pound of copper. Three pounds of tin are mixed with 7 pounds of copper to make bronze that sells for \$3.05 per pound. How much is a pound of tin worth? Click here to see answer by stanbon(57282)

 Question 404379: How many pounds of extra-lean hamburger that is 7% fat must be mixed with 30 pounds of hamburger that is 15% fat to obtain a mixture that is 10% fat. So far I have .07 + .15 I am not sure what to do with the 30 pounds or the 10% fat. Click here to see answer by scott8148(6628)

 Question 404455: How much of an alloy that is 20% copper should be mixed with 300 oz of an alloy that is 80% copper to get an alloy that is 40% copper? Click here to see answer by robertb(4012)

 Question 404584: How many gallons of a 3% salt solution must be mixed with 10 gallons of a 8% solution to obtain a 4% solution Click here to see answer by josmiceli(9664)

 Question 404583: A printer has ink that is 8% cobalt blue color and ink that is 18% cobalt blue color. How many ounces of each ink are needed to make 3 gallon (384 ounces) of ink that is 13% cobalt blue color? Click here to see answer by stanbon(57282)

 Question 404642: A solution of 60 ml is 50% acid. How many ml of water must be added to create a 30% acid solution? I tried solving this problem but got a negative answer... I put the question in this form- W+.50(60)=.30(W+60) Thank you. Click here to see answer by Alan3354(30993)

 Question 404761: A pound of tin is worth \$2 more than a pound of copper. Seven pounds of tin are mixed with 3 pounds of copper to make bronze that sells for \$4.45 per pound. How much is a pound of tin worth? Click here to see answer by ankor@dixie-net.com(15645)

 Question 404842: a bag of peanuts is worth 30 cents less than a bag of cashews. equal amounts of peanuts and cashews are used to make 40 bags of a mixture that sells for \$1.05 per bag. how much would a bag of cashews be worth? Click here to see answer by lwsshak3(6490)

 Question 404828: please I need help, I don't know how to start.than you! a solution contains 0.3 liters of sulfuric acid. if this represents 12% of the total amount, find the total amount. Click here to see answer by ankor@dixie-net.com(15645)

 Question 404830: how many gallons of a 3% salt solution must be mixed with 50 gallons of a 7% solution to obtain 5% solution? please help me out? Thanks Click here to see answer by ankor@dixie-net.com(15645)
 Question 404830: how many gallons of a 3% salt solution must be mixed with 50 gallons of a 7% solution to obtain 5% solution? please help me out? Thanks Click here to see answer by zaibi(4)

 Question 405043: Bob Grey invests \$22,000, some at 7% and some at 6% annual interest. If he recieves an annual return of \$1,420, how much should be invested at eact rate? Click here to see answer by rfer(12654)

 Question 405149: If you have 12 liters of antifreeze at a 40% solution how many liters do you need to add to increase the percentage to 60%? The answer is 6 but how do you write it correctly in algebra? Click here to see answer by ankor@dixie-net.com(15645)

 Question 405214: The meat market sells lean ground beef for \$2.40 per pound. How much should the meat market charge for a 1.65-pound package of lean ground beef? Click here to see answer by rfer(12654)

 Question 405276: Is there a formula to combine like solution concentrations to make 100% For Instance if you have a 123% pigment solution and an 87% pigment solution, how do combine them to make a 100% solution? Click here to see answer by stanbon(57282)

 Question 405328: It is necessary to have a 40% antifreeze solution in the radiator of a certain car. The radiator now has 70 liters of 20% solution. How many liters of this should be drained and replaced with 100% antifreeze to get the desired strength? Click here to see answer by stanbon(57282)

 Question 405382: How many liters of a 40% acid solution must be added to 12 liters of a 20% solution to obtain a 25% solution? Can you please show me how to work out this problem also:) Thanks. Click here to see answer by josmiceli(9664)
 Question 405382: How many liters of a 40% acid solution must be added to 12 liters of a 20% solution to obtain a 25% solution? Can you please show me how to work out this problem also:) Thanks. Click here to see answer by IWork4Dessert(60)

 Question 405508: According to the government 5.3% of those employed are multiple job holders. In a random sample of 150 people who are employed, what is the probability that fewer than 10 hold multiple jobs? What is the probability that more than 50 are not mulriple job holders. Click here to see answer by stanbon(57282)

 Question 405522: Speed limit is 65 mph. The mean speed of automobiles was measured at 63 mph with a standard deviation of 8 mph. If the speeds are normally distributed, what percentage of the automobiles are exceeding the speed lilmit? If the Highway Patrol decides to ticket ony motorist exceeding 72 mph, what percentage of the motorist might they arrest? Click here to see answer by ewatrrr(10682)

 Question 405548: Shawn read one fifth of the book on the first day. On the second day he read 12 pages. On the third day he read 3 pages less than on the first day. On the fourth day he read 5 times more than he read on the second day and he finished the book. Of how many pages is the book? Click here to see answer by ewatrrr(10682)

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