Questions on Word Problems: Mixtures answered by real tutors!

Tutors Answer Your Questions about Mixture Word Problems (FREE)

Question 276605: how many gallons of 50% antifreeze solution must be mixed with 90 gallons of 30% antifreeze to get a muxture that is 40% antifreeze?
Click here to see answer by scott8148(6628)

Question 276880: I need to get 500 gallons of a 34% mixture but I only have 5oo gallons of a 25% mixture and 500 gallons of a 50% mixture what is the formula to mix? Thank you

Click here to see answer by stanbon(75887)

Question 277154: How much acid must be added to 75 grams of solution that is 65% acid to obtain a new solution that is 75% acid?
Click here to see answer by CharlesG2(834)

Question 277202: Joe is thinking of three numbers. The first number times the second number equals the third number. The first number is twice the second number. The third number is six times the first number. What could the numbers be?
Click here to see answer by JBarnum(2146)

Question 277271: A 4% salt solution is mixed with a 16% salt solution. How many milliliters of each solutin are needed to obtain 600 milliliters of a 10% salt solution?
Click here to see answer by Alan3354(69443)

Question 277125: A silversmith mixed 40 g of a 70% silver alloy with 75 g of a 15% silver alloy. What is the percent concentration of the resulting alloy? (Round your answer to the nearest tenth of a percent.)
Click here to see answer by ankor@dixie-net.com(22740)

Question 277315: one acetic acid solution is 70% water and another is 30% water. how many liters of each solution should be mixed to produce 20 liters of a solution that is 40% water?
Click here to see answer by oberobic(2304)

Question 277447: How to get formula for this type of word problem. High velocity hose takes 12hours to fill pool. 7hrs with High velocity and low velocity. How long with low velocity hose only?
Click here to see answer by mananth(16946)

Question 277442: How many pounds of a certain alloy containing 35% silver must be melted with another alloy containing 65% silver to obtain 50 pounds of an alloy containing 50% silver?
Click here to see answer by mananth(16946)

Question 277661: .The programmer, Sammy plans to mark up the price of his virus program 35% whereas the programmer, Martin plans to mark up the price of his virus program by 54%. If Sammy's program sells for $285 and Martin's program sells for $325, who originally had the cheaper program before the price markup?
Sammy takes 5 hours longer to complet 300 lines of code than Martin. Together Sammy and Martin can complete the code in 6 hours.
How long it takes each programmer to complete the code if they program on their own. (hint: Quadratic equaiton )and 2) at what speed they are programming lines per hour.
Click here to see answer by stanbon(75887)

Question 277746: A company makes pigments used to color fabrics, plastics and paints. To ensure the finished product matches the customer�s expectations, pigments of varying strength are blended to obtain what is called a �100% strength� commercial standard. The plant has 5000 pounds of Pigment Red 1 with strength of 123% of the standard, and they also have 17,890 pounds of Pigment Red 1 at 87% strength versus the same commercial standard.

Your boss wants to know how much of the 87% material is needed to blend with the 5000 pounds of the 123% material so that the final strength of the blended material is 100% strength. What do you tell him?

Click here to see answer by stanbon(75887)

Question 277812: Solution A is 25% acid and solution B is 40% acid. How much of each solution is needed to make 100 liters of 30% acid?

Click here to see answer by stanbon(75887)

Question 277859: How many gallons of pure water must be added to a 12% salt solution in order to obtain an 8% salt solvent?
Please send answer to humble.boy.76@hotmail.com
Thank You. . . Having problems with this one.
Click here to see answer by richwmiller(17219)

Question 277977: A mixture of 40 liters of milk and water contains 10% water. How much water should be added to this so that water may be 20% in the new mixture?
Click here to see answer by richwmiller(17219)

Question 277979: Four horses are tethered at the four corners of a square of side 14cm such that two horses along the same side can
just reach each other. They were able to graze the area in 11 days. How many days will they take in order to graze
the left out area?
Click here to see answer by Theo(13342)

Question 278193: how many pounds of pure chocolate must be added to 20 pounds of brownie dough that is 30% chocolate to produce a brownie mixture that is 50% chocolate?
Click here to see answer by stanbon(75887)

Question 278075: Soybean meal is 12% protein, cornmeal is 6% protein. How many pounds of each should be mixed together in order to get 240 pound mixture that is 7% protein?
How many pounds of cornmeal?
How many pounds of soybean?
Click here to see answer by ankor@dixie-net.com(22740)

Question 278076: Train A is traveling at 100 miles per hour, and train b is traveling at 104 miles per hour/ Train A passes the station at 4:25 a.m and train B passes the station at 4:55 a.m. What time will train B catch up to train A?
Click here to see answer by ankor@dixie-net.com(22740)

Question 278196: How many gallons of 40 percent alcohol solution must be mixed with 70 percent solution to obtain 30 gallons of a 52 percent alcohol solution?
Click here to see answer by Grinnell(63)

Question 278419: A chemist has one solution that is 80% acid and another solution that is 30% acid. How much of the first (80%) solution is needed to make a 400 L solution that is 62% acid?
Click here to see answer by stanbon(75887)

Question 278429: HI! I need your help to solve this word problem. I have a lot of trouble understanding how to short the information out.
Word Problem:
At a university, 1200 students are enrolled in engineering. There are twice as many in electrical engineering (e) as in mechanical engineering, and three times as many in chemical engineering (c) as in mechanical engineering (m).
QUESTIONS:
1. Which system of equations represents the number of students in each program?
A)c+m+e=1200,2m=e,3m=c
B)c+m+e=1200,3m=e,2m=c
C)c+m+e=1200,2e=m,3c=m
D)c+m+e=1200,2m=e,3m=2e
2. How many students are enrolled in the mechanical engineering program?
A)200
B)400
C)600
D)1200

Thank You for you Time !:)

Click here to see answer by richwmiller(17219)

Question 278478: To prepare two liters of a 10% solution from a pure drug, you would need ____?
Click here to see answer by stanbon(75887)

Question 278498: find cost per pound of a coffee mixture made from 7 pounds coffee that cost $9.50 per pound and 3 pounds of coffee that costs $8.10 per pound
Click here to see answer by solver91311(24713)

Question 278492: mixed 2 liters of 80% acid solution with 6 liters of 20% acid solution. What was the percent of acid in resulting mixture?
Click here to see answer by ptaylor(2198)

Question 278645: doreen schmidt is a chemist. she needs to prepare 32 ounces of a 13% hydrochloric acid solution. find the amount of the 16% solution and the amount of 8% solution she should mix to get the solution
Click here to see answer by nyc_function(2741)

Question 278773: The radiator of a car holds 16 quarts of liquid of which 8 are antifreeze. The radiator has a leak and loses 2 quarts of liquid each week. Every week 2 quarts of water are added. After 3 weeks how much antifreeze is left in the radiator?
I know the amount of the mixture is diluted each time water is poured in, so less and less antifreeze is present after each week. I am not sure how to show the amount of antifreeze left. after each week.
There are 8/16 Antifreeze and 8/16 water, but after loosing 2 quarts of antifreeze there will be 9/16 water and 7/16 of antifreeze after the water has been added. This is where I am not sure how to proceed.
Click here to see answer by vleith(2983)

Question 278762: How many quarts of pure alcohol must be added to 10 quarts of 10% alcohol solution to obtain a mixture which is 25% alcohol?
Click here to see answer by Fombitz(32388)

Question 278811: Describe 2 advantages of the substitution method over the graphing method for solving systems of equations?
Click here to see answer by stanbon(75887)

Question 278809: Andy has 8 coins made up of quarters and half dollars, and their total value is $2.50. How many quarters does he have?
Click here to see answer by stanbon(75887)

Question 278856: Please help.
A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 7% cement should he mix with 10 bags of 15.5% cement to produce a mix containing 12% cement?
Click here to see answer by richwmiller(17219)

Question 278937: how many liters of a 40% alcohol solution must be mixed with 10 liters of a solution that is 80% alcohol to get a solution that is 60%alcohol
Click here to see answer by Alan3354(69443)

Question 278934: The perimeter of a rectangle is 62 m. If the width were doubled and the length were increased by 21 m, the perimeter would be 120 m. What are the length and width of the rectangle?
Click here to see answer by richwmiller(17219)

Question 278936: Joe has a collection of nickels and dimes that's worth $6.00. If the number of dimes were doubled and the number of nickels were increased by 6, the value of the coins would be $9.90. How many dimes does he have?
Click here to see answer by richwmiller(17219)

Question 278884: How many liters of a 40% acid is needed to combine with a 15% solution to make 30 liters of a 20% solution?

Click here to see answer by checkley77(12844)

Question 279044: Anjali wants to make 10.5 qt. of 50% sugar solution by mixing together a 70% sugar solution and a 10% sugar solution. How much of each solution must she use?
Click here to see answer by mananth(16946)

Question 279075: how much soap is needed to make 10 liters of a 20% soap solution
Click here to see answer by oberobic(2304)

Question 278913: In order to conduct an experiment just right, a researcher at a pharmaceutical company called weird growth needs 100 gallons of a special 49% acidic solution. He already has acidic solutions of 25%, 40%, and 100% because the researcher wants keep cost down, he wants to use six times as much 25% solution as 40% solution. How much of each solution will he need to come up with 100 gallons of his 49% solution?
Click here to see answer by richwmiller(17219)

Question 279571: A 16-liter radiator is filled with a solution of 40% antifreeze. How much should you drain from the radiator and replace with pure antifreeze to obtain a 60% antifreeze solution?
Click here to see answer by stanbon(75887)

Question 279656: Translate the problem into a pair of linear equations in two variables. Solve the equations using either elimination or substitution. State your answer for the specified variable.

In a chemistry class, 5 liters of a 4%-saline 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 richwmiller(17219)

Question 279701: A chemist has 10% and 16% acid solutions. How many liters of each solution are needed to produce 30 liters of a 14% acid solution?
Click here to see answer by CharlesG2(834)

Question 279744: Find the slope, if it exists. 40x-20y+15=0
Click here to see answer by josmiceli(19441)

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