Questions on Word Problems: Mixtures answered by real tutors!

Tutors Answer Your Questions about Mixture Word Problems (FREE)

Question 626686: I want to dilute 30% pure acid to 2% acid in 1 ounce of water.
Click here to see answer by stanbon(75887)

Question 626765: At the North campus of a performing arts school, 10% of the students are music majors. At the South Campus, 90%of the students are music majors. The campuses are merged into one east campus. If 42% of the 1000 students at the east campus are music majors, how many of the students, did each of the North and South campuses have BEFORE the merger?
Click here to see answer by richwmiller(17219)

Question 626801: A street corner vendor buys roses for $5.76 per dozen and sells them at $1.3 each. His costs of operation are $58 per day. If x represents the number of roses he sells in a day, express his profit for the day in terms of x. I just can't get my head around on how to approach the problem...
Click here to see answer by richwmiller(17219)

Question 626798: How many milliliters of a 45% alcohol solution must be added to 10 milliliters of a 5% alcohol solution to produce a 20% alcohol solution?
Click here to see answer by ankor@dixie-net.com(22740)

Question 626808: If I have 2 liters of a 7% solution what is the amount and concentration I must add in order to end up with a 32% solution?
Click here to see answer by ankor@dixie-net.com(22740)

Question 626988: how many quarts of 1/2% fat milk should be added to 4 quarts of 2% fat milk to obtain 1% milk?

Click here to see answer by stanbon(75887)

Question 627029: a pharmacist wishes to mix a solution that is 2% Minoxidil. She has on hand 80 ml of a 1% solution and wishes to add some 4% solution to obtain the desired 2% solution. How much solution should she add?
Click here to see answer by nerdybill(7384)

Question 627112: in a chemistry class, 8 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
Click here to see answer by reviewermath(1029)

Question 627311: how much of an alloy that is 30% copper should be mixed with 200 ounces of an alloy that is 90% copper in order to get an alloy that is 70% copper
Click here to see answer by ewatrrr(24785)

Question 627328: if the price of candy is .40 cents per pound how much is 1/4 pound of candy cost
Click here to see answer by jim_thompson5910(35256)

Question 627328: if the price of candy is .40 cents per pound how much is 1/4 pound of candy cost
Click here to see answer by ewatrrr(24785)

Question 627556: a car engine hold 7 litres of oil ,u want to add 10% of engine treatment how much additive do u use
Click here to see answer by ankor@dixie-net.com(22740)

Question 627826: How much antifreeze should be added to 300 gallons of a 30% antifreeze solution to raise the concentration to 40%
Click here to see answer by reviewermath(1029)

Question 627927: What quantity of pure acid must be added to 300 mL of a 40% acid solution to produce a 70% acid solution?
1 mL

Click here to see answer by ewatrrr(24785)

Question 627917: Let x=# of items produced and sold, and p(x)= profit from sale of items. How many times need to be sold to generate a profit of $5,100 if P(x)= 3x-900?
Click here to see answer by ewatrrr(24785)

Question 628075: Essay: Must SHOW ALL WORK! You want to create a rectangular garden, its length is 3x-3y ft. and x-5y ft. in width. Be sure to multiply this problem out class, and express it in simplest Correct mathematical form including units.
_______________________________________________________________________________
Thank you in advance.
Click here to see answer by solver91311(24713)

Question 628103: A mixture of 12 ounces of sugar and fruit-syrup is 40 percent sugar, where all of the measurements are by weight. How many ounces of fruit-syrup must be added to the mixture to produce a new mixture that is only 25 percent sugar?
Click here to see answer by lwsshak3(11628)

Question 628098: an operator needs 400 gallons of a 5% solution mix, how many gallons of a 3% solution mix and an 8% solution mix does he need to mix
Click here to see answer by lwsshak3(11628)

Question 628101: A mixture of 12 ounces of sugar and fruit-syrup is 40 percent sugar, where all of the measurements are by weight. How many ounces of fruit-syrup must be added to the mixture to produce a new mixture that is only 25 percent sugar
Click here to see answer by josmiceli(19441)

Question 628242: If the directions say to use 1/2 oz for 100 gallons, how much would you use for 1 gallon?
Click here to see answer by jim_thompson5910(35256)

Question 628519: how much each of 20% and 80% alcohol should be added to get 5 gallons of a 50% alcohol mixture
Click here to see answer by lwsshak3(11628)

Question 628576: In what ratio should a 20% methyl alcohol solution be mixed with a 50% methyl alcohol solution so that the resultant solution has 40% methyl alcohol in it?
Click here to see answer by josmiceli(19441)

Question 628751: A meatloaf mixture is made by combing ground turkey costing $1.49 per pound with ground beef costing $2.13 per pound. How many pounds of each should be used to make 8 lbs. of meatloaf mixture costing $1.89 per pound?
Please so work.
So far I've got 1.49x+2.13(1.49-x)=189(8)
Don't think I understand the method yet.
Click here to see answer by josmiceli(19441)

Question 628795: How many mL of each 45% solution and a 15% solution should be mixed in order to obtain 25mL of a 30% solution?
Click here to see answer by richwmiller(17219)

Question 628905: Forty ounces of a 35% gold alloy are mixed with 62 ounces of a 20% alloy. Find the concentration of the resulting gold alloy.
Click here to see answer by Maths68(1474)

Question 628905: Forty ounces of a 35% gold alloy are mixed with 62 ounces of a 20% alloy. Find the concentration of the resulting gold alloy.
Click here to see answer by richwmiller(17219)

Question 628923: Find the cost per ounce of a sunscreen made from 24 ounces of a lotion that costs $1.90 per ounce and 50 ounces of a lotion that costs $3.25 per ounce.
Click here to see answer by Maths68(1474)

Question 603475: 12-ounce cup of coffee is 20 percent milk. If you add 6 ounces of coffee, what is the percentage of milk in the new mixture?
Click here to see answer by ddhill1(1)

Question 628920: As part of flight training, a student pilot was required to fly to an airport and then return. The average speed on the way to the airport was 125 mph, and the average speed returning was 218.75. Find the distance between the two airports if the total flying time was 8.25 hours.
Click here to see answer by lwsshak3(11628)

Question 629157: why is the contaner of acids written 85,75 percent etc ?
Click here to see answer by Edwin McCravy(20055)

Question 629163: I need to make a 20% solution of alcohol. I have on hand 70% alcohol. What formula do I use to dilute the 70% into 20% using sterile H2O?
Click here to see answer by ewatrrr(24785)

Question 629162: In a chemistry laboratory the concentration of one solution is 10% of HCl and that of a second solution is 60% HCl. How many millilitres (mL) of the 10% solution should be used to obtain 50 mL of a 30% HCl solution?

Click here to see answer by ewatrrr(24785)

Question 629194: I have tried working this out, and I have tried following all the other tutors that have helped other students with similar problems like mine, but I am stuck:
My problem is this.
Essay: Show all work. A school designer wants to create a whiteboard with the optimal dimensions to enhance learning. It is determined that if ONE side of the whiteboard is x+y inches, the other side should be x^2-3xy+7y^2 inches. WRITE an algebraic expression for the area of such a whiteboard, SIMPLIFY it, and INCLUDE correct UNITS with your solutions.
I think I have gotten confused but this is what I have done:
L=lenght=(x)= inches
w= width=(y)= inches
x^2 - 3xy this is where I got...Can one of you tutors please help?
Thanks in advance......
Click here to see answer by stanbon(75887)

Question 629306: How to solve this problems?
Click here to see answer by richwmiller(17219)

Question 629301: how many ml of 50 dextrose solution are needed to obtain 25 g of dextrose
Click here to see answer by MonicaStitt(2)

Question 629563: How much orange juice at 42� a liter should be mixed with grapefruit juice worth 32� a liter to make 200 liters of a mixture worth 36� a liter?
If x represents the amount of orange juice used, then which of the following expressions represents the total cost of the grapefruit juice used?

Click here to see answer by ewatrrr(24785)

Question 629564: How much orange juice at 42� a liter should be mixed with grapefruit juice worth 32� a liter to make 200 liters of a mixture worth 36� a liter?
If x represents the amount of orange juice used, then which of the following expressions represents the total cost of the grapefruit juice used?

Click here to see answer by ewatrrr(24785)

Question 629663: the total bill for 20 breakffasts is 6x+7y.If this total is $126,write an equation for the total bill

Click here to see answer by ewatrrr(24785)

Question 629681: Is it possible to mix a 10% sugar solution with a 20% sugar solution to get a 30% sugar solution?
Click here to see answer by Edwin McCravy(20055)

Question 629707: The width of a rectangle is 40% of the length. The perimeter of the rectangle is 42 m. Find the length and width of the rectangle.
Click here to see answer by 55305(86)

Question 629798: 5. Terri and Mark live 63 miles apart. Both left their homes at 7am by bicycle, riding towards each other. They met at 10am. If Mark�s average speed was three-fourths of Terri�s, how fast did each cycle?
Click here to see answer by richwmiller(17219)

Question 629837: What quantity of pure acid must be added to 400 mL of a 40% acid solution to produce a 75% acid solution
Click here to see answer by josmiceli(19441)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245