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Question 819749: How many gallons of 65% antifreeze and how many gallons of 20% antifreeze should be mixed to obtain 50 gallons of a 56% mixture of antifreeze? (Hint: Let x represent the number of gallons of 65% antifreeze. Then 50 - x represents the amount of 20% antifreeze.)

Click here to see answer by TimothyLamb(4379)

Question 819746: How much of a solution that is 30% alcohol must be added to 55 liters of a solution that is 60% alcohol to obtain a solution that is 40% alcohol?
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Question 819737: [ given: x/50 = 20/100. solve for x ]
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Question 819911: How many liters of pure alcohol must be added to 10 liters of a 30% solution to obtain an 80% solution?
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Question 819880: A grocery store offers a cheese sampler that includes a pepper cheddar cheese that costs $16 per kilogram and Pennsylvania Jack that costs $12 per kilogram. How many kilograms of each were used to make a 5 kilogram mixture that costs $13.20 per kilogram
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Question 819925: If 1/2 of a pound of sugar is needed to make 40 cookies, then 60 cookies would require how many pounds of sugar?
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Question 819951: How do I set up the question....
How much 5% acid solution and how much 10% acid solution must be mixed to make 2.5 liters of a 7% acid solution?
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Question 820053: How much 2% acid must be mixed with 10% acid to obtain 2,000 ml of 8% acid?
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Question 820001: 1.) Mark drank a total of 20 liters of water over 4 days. How many days will it take Joe to consume 35 liters of water?
2.) Mom made 72 truffles in 8 days. How many days will it take her to make 99 truffles?

3.) Molly used 22 centimeters of tape to wrap 11 presents. How much tape will she need in all if she has to wrap 12 presents?
4.) The teacher bought 10 books during 5 days of the book fair. After 9 days, how many total books will the teacher have bought?
Click here to see answer by ortarico(23)

Question 820160: Kem E Cal. heated 500 milliliters of an 8% saline solution until all but 400 milliliters of the solution has evaporated. What percentage of the remaining solution was salt.
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Question 820374: A lab technician has 680 ml of a solution of water and 3% acid. How many milliliters are acids?
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Question 820344: A chemist mixes a 10% solution with a 50% acid solution to form 400ml of a 40% solution. How much of each solution should be used in the mixture?
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Question 820411: How much water should be added to 16 mL of 12% alcohol solution to reduce the concentration to 8%?
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Question 820380: What quantity of a 55% acid solution must be mixed with a 30% acid solution to produce 800 mL of a 36.25% solution?
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Question 820426: Suppose a chemist combines a 25% acid solution and a 50% acid solution to make 40 l of 45% acid solution. How many liters of each solution did she use?
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Question 820474: A pharmacist wishes to mix a solution that is 3% Minoxidil. She has on hand 70 ml of a 1% solution and wishes to add some 5% solution to obtain the desired 3% solution. How much 5% solution should she add?
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Question 820522: A pharmacist wants to mix a 6% solution with 5 liters of a 12% solution to get a mixture that is an 8% solution. How much of the 6% solution should he use?
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Question 820746: "Salt water" refers to a mixture in which salt has been dissolved in water, with
no salt crystals remaining in the bottom of the container. When evaporation takes place, only
water leaves the solution, leaving all the salt in the remaining solution, or "brine."
Suppose 100 cc of salt water are set out in the sun. The original solution was
99 % water. After a period of time a sufficient amount of water has evaporated so
that the brine solution is only 98 % water. How much water must have
evaporated?
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Question 821079: how much of a 10% syrup solution should be added to 2 litres of a 30% syrup solution to get a 20% syrup solution
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Question 821079: how much of a 10% syrup solution should be added to 2 litres of a 30% syrup solution to get a 20% syrup solution
Click here to see answer by TimothyLamb(4379)

Question 821183: In Chemistry, you mixed a 10% solution with a 15% solution to get 100 milliliters of a 12% solution. How much of the 10% solution did you you use in the mixture?
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Question 821200: how much water is to be mixed with 20L% hydrochloric acid solution that is 20% hydrochloric acid?

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Question 821137: How can i solve this problem?
A ferry leaves a harbor and travels to a resort island at an average speed of 14mph. On the return trip, because of fog, the ferry travels at an average speed of 10mph. The total time for the trip is 6h. How far is the island from the harbor?
Click here to see answer by richwmiller(17219)

Question 821332: A grocer mixed cashews worth $4.25 per pound with peanuts worth $2.75 per pound. How many pounds of each kind did he use to make a mixture of 60 pounds to sell at $3.75 per pound?
Click here to see answer by stanbon(75887)

Question 821417: A 20% acid solution is to be mixed with a 50% acid solution in order to get 600 ounces of a 30% acid solution. How many ounces of the 20% solution and 50% solution should be mixed?
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Question 821424: A 4-liter container contains a mixture with a concentration of 50%. How much of this mixture must be withdrawn and replaced by 100% concentration to bring the mixture up to 75% concentration?
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Question 821486: I bought a certain number of eggs at four a rupee; I kept one-fifth of them, and sold the rest at three a rupee; and gained a rupee: how many did i buy ?
Click here to see answer by ewatrrr(24785)

Question 821558: How much of a 10 liter 30% acid solution must be replaced with pure acid to obtain 10 liters
of a 50% solution?
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Question 821577: candy worth $5 per pound is to be mixed with candy worth $10 per pound to get 200 pounds of a mix of worth $8 per pound. How many pounds of the $5 candy will be needed?
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Question 821473: after 4 years father's age will be 3 times as his son and 6 years ago father's age was 7 times as his son find their present ages ? Solution
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Question 821472: after 4 years father's age will be 3 times as his son and 6 years ago father's age was 7 times as his son find their present ages ?
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Question 821588: alberto wants to make 10 liters of a 13% solution by mixing together a 10% acid solution and a 20% acid solution. how much of each solution must he use ?
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Question 821610: one type of punch is 20% ginger ale. and another type of punch is 60% ginger ale. How much of each kind should be used to make 100 gallons of punch that is 30% ginger
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Question 821636: An alcohol solution was made by mixing 12 fl. oz of a 30% alcohol solution and 3 fl.oz of a 90% solution. What is the concentration of the mixture?
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Question 821669: Solution A is 25% acid and Solution B is 10% acid. How many liters of each must be mixed to obtain 20 liters of a 19% acid solution?
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Question 821686: A chef is using a mixture of two brands of Italian dressing. The first brand contains 5% vinegar, and the second brand contains 15% vinegar. The chef wants to make 280 milliliters of a dressing that is 9% vinegar. How much of each brand should she use?
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Question 821728: in a show adult ticket is sold at 1 $

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Question 821727: in a show adult ticket is sold at 1 $
each ticket, and child ticket
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Question 821735: purple punch is made by mixing red juice and blue tonic soda. a perfect purple punch is 50% red and 50% blue. if i have 2 liters of punch which is 70% blue ( and 30% red). how much red juice do I need to add to make perfect purple punch
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Question 821768: in a show adult ticket is sold at 1 $ each ticket, and child ticket
costs 75 cents total 140 tickets have
been sold and 150 $ earned, tell how
many each tickets sold? Solve
Click here to see answer by stanbon(75887)

Question 821774: A Chemist has one solution that is 12% acid and another solution that is 24% acid. How much of the 12% solution is needed to make 20 L of a solution that is 15% acid?
Click here to see answer by Alan3354(69443)

Question 821804: How much 20% disinfectant solution must be mixed with a 30% disinfectant solution to produce a 40gal of 27% disinfectant solution
Click here to see answer by ewatrrr(24785)

Question 821828: One summer evening 1600 concert tickets were sold for the Fairmont Summer Jazz Festival. Tickets cost $20 for covered pavilion seats and $10 for lawn seats. Total receipts were $26,000. How many of each ticket were sold.
Let x equal the number of pavilion seats sold
let y equal the number of lawn seats sold
complete the system of equations
x+y=_
_x+_y=26,000
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Question 821709: Points A and B move with uniform speed along straight lines that intersect at right angles at point O.When A is at O,B is 100m from O.after 5minutes they are equidistant from O.after 5 more minutes they are again equidistant from O.Then the ratio of A's speed to B's speed is

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

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