Questions on Word Problems: Mixtures answered by real tutors!

Tutors Answer Your Questions about Mixture Word Problems (FREE)

Question 475262: In testing gasohol mixtures, two mixtures are on hand: Mixture A (90% gasoline, 10% alcohol) and mixture B (80% gasoline, 20% alcohol). How much of each mixture must be combined to get 100 gallons of an 84% gasoline, 16% alcohol mixture.
Click here to see answer by josmiceli(19441)

Question 475288: How many liters of water should be added to a 30 liter mixture of milk And Water in the ratio of 7:3 so that the mixture has 40% water in it?
Please explain the answer. Thanks.
Click here to see answer by josmiceli(19441)

Question 475177: A druggist wants to reduce a 20-ounce quantity of a 7% solution of iodine to a 4% solution by adding pure alcohol. How much alcohol must he add to accomplish this?
Click here to see answer by josmiceli(19441)

Question 475483: .35*2m^3 + .15*6m^3 = x/100*8m^3 I'm not sure how to proceed from here. I got the solution online, but steps the tutor considered redundant were omitted, and even working backward from the solution, I can't figure out what they were. I need those steps so I can figure these things out on my own. Thanks for considering my problem. Ron
Click here to see answer by ewatrrr(24785)

Question 475827: the owners of candy store want to sell, for $6 per pound, a mixture of chocolate covered raisins, which usually sell for $3 per pound, and choclate covered macadamia nuts, which usually sells for $8 per pound, they have a 70 pound barrel of raisins . How much pounds of nuts should they mix with the barrel of raisin so they hit their target value of $6 per pound for the mixture

Click here to see answer by stanbon(75887)

Question 475945: One liter of a 50% saline solution is mixed with 1 liter of pure water. What is the concentration of the resulting solution?
Click here to see answer by josmiceli(19441)

Question 476083: how much of an alloy that is 20 copper should be mixed with 600 ounces of an alloy that is 70% copper in order to get an alloy that is 30% copper
Click here to see answer by ankor@dixie-net.com(22740)

Question 476230: to cover a certain distance a passenger jeep traveling at 48km per hour requires 3 hours longer than a station wagon traveling at 72km per hour. find the distance.
Click here to see answer by ccs2011(207)

Question 476225: how much water must be added to 260 liters of 75% hydrochloric acid solution to give a mixture with 60% hydrochloric acid?
Click here to see answer by lwsshak3(11628)

Question 476270: the gate receipts at the basketball game in gym is 43,500 pesos for 2 500 spectators. If the price for reserved seat was 20 pesos and the general admission was 15 pesos, how many ticket were sold each kind?
Click here to see answer by Maths68(1474)

Question 476498: If a dairyman has 300 pounds of milk testing 3% butterfat, how many pounds of skimmed milk (with no butterfat) must he remove to have milk testing 3.6% butterfat?
Click here to see answer by jorel1380(3719)

Question 476543: Two motors are winding up rope. The first motor can wind up rope at 2ft per second, and the second motor can wind up rope at 5ft per second.
a). write a simplified expression that gives the length of rope by both motors in x seconds.
b). find the total length of rope wound up in 3 minutes.
c). how many minutes would it take to wind up 2100ft of rope by using both motors.
First off, i attempted to answer from the bottom up.
c). t=d/r i got the answer being 5 minutes.
b). d=rt 7ft per second (3min) 7ftps= 420ft per min answer would be 1260 ft
i'm just not quite sure how to write these answers correctly showing my work.
Click here to see answer by mananth(16946)

Question 476467: Determine the probability distribution's missing value.
The probability that a tutor will see 0, 1, 2, 3, or 4 students
Click here to see answer by robertb(5830)

Question 476591: A chemist has 500g of a solution that is 40% acid. How many grams of water must be added to reduce the acidity to 25%?
Click here to see answer by ankor@dixie-net.com(22740)

Question 476652: using a system of equations to solve the applied problem. Solve the system Ten liters of 30% solution needs to be mixed with 80% solution to produce a 50 % solution. How much of the 80% solution is needed. I need this by 2pm

Click here to see answer by ankor@dixie-net.com(22740)

Question 476695: If 10 gallons of grape fruit juice are added to 40 gallons of mixture, which contains 10% grape juice, then what percent of the resulting mixtue is grape juice?
Click here to see answer by lwsshak3(11628)

Question 476913: Someone please help and show me how to figure this--How many ounces of water should be added to 4g of 1:4 solution to make a 1:6 solution?
Click here to see answer by stanbon(75887)

Question 477666: A solution of 60 quarts of sugar and water is 20% sugar. How much water must be added to make a solution which is 5% sugar?
Click here to see answer by mananth(16946)

Question 477877: A bag contains 3 purple marbles and 4 white marbles. Two marbles are drawn at random. One marble is drawn and not replaced. Then a second marble is drawn. What is the probability that the first marble is white and the second one is purple?
Click here to see answer by stanbon(75887)

Question 477879: Two urns each contain green balls and blue balls. Urn I contains five green balls and two blue balls and Urn II contains two green balls and five blue balls. A ball is drawn from each urn. What is the probability that both balls are blue?
I don't understand how to work this.
Click here to see answer by stanbon(75887)

Question 477873: how much of an allow that is 30% copper should be mixed with 200 ounces of an alloy that is 70% copper in order to get an alloy that is 50% copper
Click here to see answer by Alan3354(69443)

Question 477890: A lunch menu consists of 3 different sandwiches, 2 different soups, and 4 different drinks. How many choices are there for ordering a sandwich, a bowl of soup, and a drink?
Click here to see answer by mangopeeler07(462)

Question 478103: How many gallons of a 12% salt solution must be mixed with 6 gallons of a 20% salt solution to obtain 13% salt solution?
Click here to see answer by mananth(16946)

Question 478234: D�Andre wants 14 L of fruit punch that is 10% juice. At the store, he finds only punch that is 15% juice or punch that is 8% juice. How much of each should he purchase?
Click here to see answer by cleomenius(959)

Question 478270: Ms. Lopez needs to make 70 millimeters of a 25% acid solution by mixing together a 15% acid solution with a 40% acid solution. How much of each solution must she use?
Click here to see answer by stanbon(75887)

Question 478158: A mixture of 50 litres of milk and water contain 10% of water. How much water must be added to make water 20% in the given mixture?

Click here to see answer by scott8148(6628)

Question 478415: Solve each system graphically. Be sure to check your solution. If a system has an infinite number of solutions, use set builder notation to write the solution set. If a system has no solution, state this.
b+ 2a = 2,
a= -3 - b
Click here to see answer by mananth(16946)

Question 478648: How much pure alcohol must be added to 10 gallons of 35% alcohol to have a solution that is 60% alcohol?
Click here to see answer by scott8148(6628)

Question 478700: Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 80 miles per hour and train B is traveling at 90 miles per hour. Train A passes a station at 12:25 A.M. If train B passes the same location at 12:37 A.M., at what time will train B catch up to train A?
Click here to see answer by mananth(16946)

Question 478796: How much water is needed tot dilute sulfuric acid 37% to 15% sulfuric acid.
And make 40% hydrogen peroxide 30%
Click here to see answer by stanbon(75887)

Question 478960: How much pure alcohol must be added to 10 gallons of 35% alcohol to have a solution that is 60% alcohol? Solve by substitution method
Click here to see answer by Earlsdon(6294)

Question 479004: A 10 OUNCES SOLUTION OF ALCOHOL AND IODINE IS 3% IODINE.HOW MUST ALCOHOL MUST BE ADDED TO MAKE A SOLUTION FOR TREATING CUTS THAT IS ONLY 2% IODINE?
GOOD MORNING SIR/MA'AM.I NEED A STEP-BY-STEP SOLUTION. THANK YOU

Click here to see answer by mananth(16946)

Question 478986: How many litres of a 30% acid solution should be added to 20 litres of a 60% acid solution in order to obtain a 50% acid solution?
Click here to see answer by mananth(16946)

Question 479311: I am having trouble completing this word problems for my assignment. I have to use two out of three of the following methods. Substitution, graphic, elimination. Here is the word problem. Quick Copy recently charged $0.49 per page for color pages and $0.07 per page for black-and-white copies. If Shirlee's bill for 90 copies was $11.34, how many copies of each type was made?
Click here to see answer by jorel1380(3719)

Question 479334: Mike is a chemist. He needs to prepare 36 ounces of 13% hydrochloric acid solution. Find the amount of 18% solution and amount of 9% solution he should mix to get this solution.
Click here to see answer by ankor@dixie-net.com(22740)

Question 479453: a grocer plans to mix candy that sells for $1.20 a pound with candy that sells for $2.40 a pound to get a mixture that he plans to sell for $1.65 a pound. how much of the $1.20 and the $2.40 candy should he use if he wants 40 pounds of the mix?
Click here to see answer by jorel1380(3719)

Question 479525: we have 5 gallons of a 8% bleach solution. We want 5 gallons of a 6% bleach solution. How much 8% solution and how much pure water do we need? Thanks!
sueaft@gmail.com
Click here to see answer by stanbon(75887)

Question 479521: if a mixture of water and sulfuric acid contains three times as much water as acid, then how much of each is there in 60cc's of the mixture?
Click here to see answer by stanbon(75887)

Question 479560: the graph of y=-3x+10 and y=-2/3x+3 meet at the point where
Click here to see answer by mananth(16946)

Question 479686: I have 98% sulfuric acid and I want a 1000ml solution of. 15% sulfuric acid. How much concentrate and how much water should I use to make my solution???
Click here to see answer by mananth(16946)

Question 479688: I have a 50% solution of hydrogen peroxide and I want to make 1000mls of 30% hydrogen peroxide. How much water and concentrate should I use?
Click here to see answer by mananth(16946)

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