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Question 855903: A chemist has 40 ounces of a solution that is 30% acid. How many ounces of a 35% acid solution should he add to make a solution that is 33% acid?
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I tried: 40(30%)+x(35%)=33% but I came up with 1357/7 and that's not the right answer. I really have no clue how to set this problem up correctly.
Click here to see answer by ankor@dixie-net.com(22740)

Question 856041: how can i prepare ( 100 mg/kg suspended in 0.5% aqueous)?
thank you for your help
Click here to see answer by josgarithmetic(39617)

Question 856367: For an experiment, a student requires milliliters of a solution that is NaCl (sodium chloride). The storeroom has only solutions that are NaCl and NaCl. How many milliliters of each available solution should be mixed to get milliliters of NaCl
Click here to see answer by richard1234(7193)

Question 856361: How much 150 proof alcohol do I have to add to 80 proof Vodka to end up with 100 proof?

Click here to see answer by richwmiller(17219)

Question 856361: How much 150 proof alcohol do I have to add to 80 proof Vodka to end up with 100 proof?

Click here to see answer by josgarithmetic(39617)

Question 856358: mix a 10% acid solution with a 60% acid solution to create 200 millileters of a 52.5% solution. How many millileters of each solution must James use?
Click here to see answer by josgarithmetic(39617)

Question 856457: Terry is mixing a punch which contains 3 liters of juice for every 2 liters of soda. If he wants to make 21
liters of punch, how much juice does he need
Click here to see answer by lwsshak3(11628)

Question 856544: if we dissolve 1kg salt in 1dm3 solution and then evaporate water to make it crystal ... what amount of salt we can get
Click here to see answer by Alan3354(69443)

Question 856680: if 2/3 of pound of metal cost 6.00,how much does a pound cost?
Click here to see answer by josmiceli(19441)

Question 856786: how many liters of 20% antifreeze solution and a 40% antifreeze solution must be mixed to make 10 liters of a 28% antifreeze solution?
Click here to see answer by josgarithmetic(39617)

Question 856213:
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Question 857010: Simplify 6:72
Click here to see answer by Fombitz(32388)

Question 857024: Simplify 1hour:20 seconds
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Question 857057: How much of a 50% salt solution should be added to 80L of a 5% salt solution to obtain a 30% salt solution?
Click here to see answer by stanbon(75887)

Question 857100: Express 1,6 as a mixed fraction
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Question 857259: Hello! I have a word problem that I am having trouble with on my algebra homework... If you would help that would be awesome!
Here it is:
Ben adds a 65% fruit juice solution to 15mL of a drink that is 10% fruit juice. How much of the 65% fruit juice solution must be added to make a punch that is 35% fruit juice?
Thank you!
Click here to see answer by mananth(16946)

Question 857265: Hello! I have a word problem that I am having trouble with on my algebra homework... If you would help that would be awesome!
Here it is:
Ben adds a 65% fruit juice solution to 15mL of a drink that is 10% fruit juice. How much of the 65% fruit juice solution must be added to make a punch that is 35% fruit juice?
Thank you!!
Click here to see answer by josgarithmetic(39617)

Question 857336: How much pure acid should be mixed with 5 gallons of a 40% acid solution in order to get a 90% acid solution
Click here to see answer by josmiceli(19441)

Question 857040: 30 bags of cement are mixed With 4500 kg of sand.show by means of calculations that the ratio is correct
Click here to see answer by Fombitz(32388)

Question 857432: Professor Snape looks in his potion cabinet and notices that 27% Polyjuice potion. He wants to make 13 gallons of a 45% Polyjuice potion. How much 65% Polyjuice potion is needed to make the desired potion?
Click here to see answer by josgarithmetic(39617)

Question 857619: Jan needs 7 milliliters of a 55% solution. She only has 40% of weak solution and 61% of a strong solution. How many milliliters of each does she need of each solution.
Click here to see answer by mananth(16946)

Question 857621: A scientist mixes 100mL of a solution that is 8% salt by weight with 200mL of a solution that is 10% salt by weight. What percent salt is the resulting solution?
A.9%
B.13%
C.18%
D.28%

Click here to see answer by josgarithmetic(39617)

Question 857775: The radioactive isotope you discovered at 8 am weighed 75 mg. At 3 pm it measured only 0.009 grams. Rounded to the nearest whole minute, what is its half life?
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Question 857786: A 10% salt solution is to be mixed with pure water to produce 75 gallons of a 3% salt solution. How much of each are needed?

Click here to see answer by josmiceli(19441)

Question 857987: How much pure alcohol should be added to a 40% alcohol solution to make 600mL of a 75%alcohol solution? (equations please)
Click here to see answer by fcabanski(1391)

Question 857987: How much pure alcohol should be added to a 40% alcohol solution to make 600mL of a 75%alcohol solution? (equations please)
Click here to see answer by Alan3354(69443)

Question 858246: Chris needs to mix a 20% alcohol solution with a 60% alcohol solution to create 200 millileters of a 54% solution. How many millileters of each solution must Chris use?
mililiters of 20% solution
mililiters of 60% solution
Click here to see answer by ramkikk66(644)

Question 858354: A certain recipe asks for 8/9 cup of granola. How much is needed to make 1/9 of a recipe?
Click here to see answer by checkley79(3341)

Question 858361: At The Old Home Fill'er Up and Keep on a-Truckin' Cafe, Mavis mixes two different types of coffee beans to produce a house blend. The first type costs $2 per pound and the second costs $7 per pound. How much of each type does Mavis use to make 75 pounds of a blend which costs $4 per pound? (If the system is dependent assign the free variable the parameter t.)
Click here to see answer by josgarithmetic(39617)

Question 858844: How many grams of salt must be added to 90 grams of a 20% salt solution to make a 25% salt solution?
Click here to see answer by josgarithmetic(39617)

Question 858933: Dilbert needs to mix a 20% fungicide solution with a 50% fungicide solution to create 200 milliliters of a 42.5% solution. How many milliliters of each solution must Dilbert use?
_________ milliliters of 20% solution
_________ milliliters of 50% solution
Click here to see answer by josgarithmetic(39617)

Question 859008: How many milliliters of 8% hydrochloric acid and 15% hydrochloric acid to get 100 milliliters of solution that is 12.2% hydrochloric acid?

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Question 859007: new brand of plant fertilizer is to be made from three different types of chemicals (A, B, C).
The mixture includes 80% of chemicals A and B.
Chemical B and C must be in ratio of 3 to 4 by weight.
How much of each type of chemical is needed to make 600kg of plant fertilizer?

Click here to see answer by Awesom3guy(31)

Question 859085: How do you set this problem up?
Jody was preparing a snack to take hiking. She started with 3lbs of trail mix containing 55% peanuts, then added 2lb can of mixed nuts which was 40% peanuts. What percentage of mixture is peanuts?
Click here to see answer by josgarithmetic(39617)

Question 859332: how much pure acid should be mixed with 7 gallons of a 40% acidic solution in order to get a 80% acidic solution
Click here to see answer by mananth(16946)

Question 859343: how much pure acid should be mixed with 5 gallons of a 70% acidic solution in order to get a 90% acidic solution
Click here to see answer by stanbon(75887)

Question 859385: a lab assistant wants to make ten liters of 40% acid solution. if solution of 50% and 25% are in stock, how many liters of each must be mixed to prepare the solution
Click here to see answer by josgarithmetic(39617)

Question 859497: A grocer wants to mix two kinds of candy. One kind sells for $1.45 per pound, and the other sells for $2.55 per pound. He wants to mix a total of 25 pounds, and sell if for $2.05 per pound. How many pounds of each kind should he use in the new mix?
Click here to see answer by josgarithmetic(39617)

Question 859483: 2L of a 28% saline solution was mixed with 12L of pure water. what is the concentration of the mixture?
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Question 859061: How many ouncesof peanuts must Shannon add to 15 ounces of mixed nuts containing 55% peanuts to make a mixture with 75% peanuts?
Click here to see answer by josgarithmetic(39617)

Question 859700: Sam has a 10 gallon paint can with a mixture of 90% paint and 10% water. Sam needs an 80% 20% mixture. How much water does Sam needs to add? I know the answer is 1.25 gallons. I don't understand how this answer was calculated. I am trying to help my son, any help would be appreciated.
Click here to see answer by josgarithmetic(39617)

Question 859831: How many litres of water will have to be added to 1125 litres of 45% solution of milk ,so that resulting mixture will contain atleast 25% milk content ?
Click here to see answer by josgarithmetic(39617)

Question 859846: a chemist needs 60 milliliters of a 42% solution but has only 36% and 54% solutions available. Find how many milliliters of each solution should be mixed to get the desired solution?
Click here to see answer by ewatrrr(24785)

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