Questions on Word Problems: Mixtures answered by real tutors!

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Question 211637: a baker needs between 40lb and 50lb of a flour sugar mixture that contains ten times as much flour as sugar. What are the possible weights of flour the baker can use?
Click here to see answer by ptaylor(2198)

Question 212067: how many quarts of pure antifreeze must be added to 5 quarts of 10% antifreeze solution to obtain a 30% antifreeze solution
Click here to see answer by HyperBrain(694)

Question 212092: How much water must be added to 6gallons of a 4% insecticide solution to reduce the concentration to 3% (hint: water is 0% insecticide)
Click here to see answer by HyperBrain(694)

Question 212210: the owner of a local chocolate shop wants to develop a new trail mix. how many pounds of chocolate covered peanuts worth $5/lb should be mixed with 10 lbs worth $2/lb to get a mixture worth $3/lb?
Click here to see answer by checkley77(12844)

Question 212320: HOW MANY LITERS OF A 10% ALCOHOL SOLUTION MUST BE MIXED WITH 40 L OF A 50% SOLUTION TO GET A 40% SOLUTION?
Click here to see answer by HyperBrain(694)

Question 212489: How to evenly divide 8.0 fl.oz liquid into two 4.0 fl.oz
Click here to see answer by stanbon(75887)

Question 212521: i was tought this but i forgot sooo: how many grams of salt must be added to 30 grams of a 20% salt solution to obtain a 25% salt solution?
Click here to see answer by stanbon(75887)

Question 212524: How many grams of pure gold and how many grams of an alloy that is 75% gold would it take to make 50 grams of an alloy that is 85% gold?
Is this correct?
Let x = grams of 100% gold
Let y = grams of 75% gold allow
Given x + y = 50 grams
Find x and y for 85% gold alloy
________________________________________
X + .75(50 � x) = .85 * 50
X = 20
Y = 30

Click here to see answer by stanbon(75887)

Question 212548: How many gallons of a 65% solution must be mixed with 8 gallons of water to make a 25% solution?
Click here to see answer by checkley77(12844)

Question 212170: How much antifreeze needs to be added to a 60 capacity water boiler to make it not freeze at -10 degrees.
Click here to see answer by ankor@dixie-net.com(22740)

Question 213074: how much distilled water should be added to 100 ml of a highly concentrated 90% saline solution to reduce the concentration to 40%? what is the volume of the resulting mixture?
Click here to see answer by Alan3354(69443)

Question 213388: how many gallons of pure alcohol should b mixed with 20 gallons of a 15% alchol solution to obtain a mixture that is 25% alcohol?
Click here to see answer by stanbon(75887)

Question 213388: how many gallons of pure alcohol should b mixed with 20 gallons of a 15% alchol solution to obtain a mixture that is 25% alcohol?
Click here to see answer by RAY100(1637)

Question 213395: how many gallons of a 5% acid solution must be mixed with 5 gallons of a 10% solution to obtain a 7% solution ?
Click here to see answer by nerdybill(7384)

Question 213393: an automobile radiator holds 6 liters of fluid. there is currently a mixture in the radiator that is 80% antifreeze and 20% water. how much of this mixture should be drained and replaced by pure anitfreezes so that the resulting mixture is 90% antifreeze?
Click here to see answer by josmiceli(19441)

Question 213391: how much water should b added to 8 milliliters of 6% saline solution to reduce the concentration to 4% saline?
Click here to see answer by josmiceli(19441)

Question 212066: how many quarts of pure antifreeze must be added to 5 quarts of 10% antifreeze solution to obtain a 30% antifreeze solution
Click here to see answer by ptaylor(2198)

Question 213560: An advertisement for grape drink claims that the drink contains 10% grape juice. How much pure grape juice would have to be added to 5 quarts of the drink to obtain a mixture of 40% grape juice?
Click here to see answer by checkley77(12844)

Question 213620: How many gallons of pure alcohol should be mixed with 20 gallons of 15% alcohol solution to obtain a mixture that is 25% alcohol?
Click here to see answer by josmiceli(19441)

Question 213661: "in a chemistry class, 7 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 stanbon(75887)

Question 213718: How much water must be evaporated from 10gal of a 12% sugar solution in order to obtain a 15% sugar solution?

Click here to see answer by rapaljer(4671)

Question 213844: Ellen takes 1/4 of the oranges in a bowl Jeff takes 1/3 of the remaining oranges in the bowl. Ellen and Jeff later decide that they don't need all their oranges so they each put 1 back in the bowl. Carlos takes 1/2 of the oranges that remain in the bowl There are now 4 oranges left in the bowl. How many oranges were originally in the bowl?
Click here to see answer by ankor@dixie-net.com(22740)

Question 213954: How many milliliters of a 29% alcohol solution must be added to 5 milliliters of a 5% alcohol solution to produce a 17% alcohol solution?
Click here to see answer by checkley77(12844)

Question 214085: Some 5% alcohol Solution is mixed with another 20% alcohol solution to get a mixture of 25 liters of 14% solution. Find the amount of each alcohol solution before mixing.
Click here to see answer by nerdybill(7384)

Question 214190: ricardo needs to have a 20% solution of antifreeze and water in his radiator. if the Radiator of truck contains 8 quarts of Solution of antifreeze and water, with 10% being antifreeze, how much antifreeze must be added to create the desired solution
Click here to see answer by josmiceli(19441)

Question 214314: I am having a hard time trying to figure this problem out. It would be greatly appreciated if you could assist me. This question is from a work book not the text book:

Brass is an alloy made up of copper and zinc in varying proportions. How much brass containing 75.5% copper must be combined with a different brass containing 86.3% copper to make 5250kg of brass containing 80.0% copper

Thanks so much,
Click here to see answer by stanbon(75887)

Question 214281: How many quarts of pure orange juice should micheal add to a 10% orange drink create 6 quarts of a 40% orange juice mixture? Let p represent the number of quarts of pure orange juice he should add to the orange drink
Click here to see answer by ptaylor(2198)

Question 214386: If the temperature for a 24 hour period ranged between 41 and 59 (degrees Fahrenheit, what is the range in Celsius degrees? Use the formula F=(9/5)C+32. Epress the answers as a compund inequality.
Click here to see answer by stanbon(75887)

Question 214434: I would appreciate help with this:
In order to achieve maximum results from aerobic exercise, one should maintain one�s heart rate at a certain level. A 30-year-old woman with a resting heart rate of 60 beats per minute should keep her heart rate between 138 and 162 beats per minute while exercising. She checks her pulse for 10 sec while exercising. What should the number of beats be?
This should be in the form of an inequality.

I thank you very much!
Click here to see answer by stanbon(75887)

Question 214454: Please help me with the following problem:

Young�s rule for determining the amount of a medicine dosage for a child is given by C=ad/a+3, where "a" is the child�s age and "d" is the usual adult dosage, in milligrams. (Warning ! Do not apply this formula without checking with a physician!) An 8-year old child needs medication. What adult dosage can be used if a child�s dosage must stay between 100 mg and 200 mg?

This must be solved in the form of an inequality.
I appreciate and thank you for your help!
Click here to see answer by rfer(16322)

Question 214577: A mixture of 10 % acid and 90 % water is added to 5 liters of pure acid. The final mixture is 40 % water. How many liters of water are in the final mixture ?
Click here to see answer by stanbon(75887)

Question 214702: A jeweler melts down 90 grams of jewelry that is made of an alloy of 20% silver and 80% gold. He wishes to add enough silver to create an alloy that is 30% silver and 70% gold. How much silver should he add?
Click here to see answer by ankor@dixie-net.com(22740)

Question 214049: Joeseph Smith is the manager of a trust. He invested 30% of a clients cash in gov't bonds that earn 6.5% annual simple interest, 30% in utility stocks that earn 7% annual simple interest, and the remainder in an account that earns 8% annual simple interest. The total annual interest earned from the investments was $5437.50. Find the total amount invested.
Click here to see answer by checkley77(12844)

Question 214048:
Mae Jackson has a total of $6000 invested in two simple interest accounts. The annual simple interest
rate on one account is 9%. The annual simple interest rate on the second account is 6%. How much is
invested in each account if both accounts earn the same amount of interest?
Click here to see answer by checkley77(12844)

Question 214827: Respected sir,
plz solve my maths prob.
1]A full bottel contains 40% oil,20%vinegar,& 40% water.The bottel is poured in to a large bottel,four times as big as the orignal.the remaining space in the larger ottel is then filled with water.if there were 8ml of oil in the orignal bottel,how much water is in the final mixture?
waiting for yur reply.
thank u.
regards
binita .
Click here to see answer by rfer(16322)

Question 214963: suppose that a chemist is mixing two acid solutions. one of 20% concentration and the other of 30% concentratio. which of the following concentrations could not be contained. A)22% B)24% C)28% D)32&
Click here to see answer by Alan3354(69443)

Question 215162: A ball is thrown upward from ground level with an initial velocity of 108 ft per sec. Its height H in feet after T seconds is given by the equation . At what time will the ball hit the ground?
Click here to see answer by Edwin McCravy(20055)

Question 215177: A 96% solution of sulfuric acid is to be diluted with distilled water to make a 90% solution of sulfuric acid. How many litres of the orginal solution and how many litres of water are necessary to make 12.0L of the 90% solution?
Click here to see answer by ankor@dixie-net.com(22740)

Question 215299: a mixture containing 8% salt is to be mixed with 40mL of a mixture that is 20% salt, in order to obtain a solution that is 12% salt. How much of the first solution must be used?
Click here to see answer by RAY100(1637)

Question 215275: A chemist needs to mix a 75% saltwater soulution with a 50% saltwater solution to obtain 10 gallons of a 60% mixture. How much of each soultion is required?
Click here to see answer by Edwin McCravy(20055)

Question 215321: how many pounds of an alloy of 20% silver must be melted with 50lbs of an alloy with 30% silver in order to get an alloy of 27% silver
Click here to see answer by checkley77(12844)

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