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Question 1048924: An automobile radar contains 12L of a mixture of water and antifreeze. The mixture is now 20% antifreeze. How much of the mixture must be drawn off and replaced by pure antifreeze to get a mixture containing 30% antifreeze?
Click here to see answer by ikleyn(52781)

Question 1048917: How many pounds of coffee beans that costs $2 per pound should be added to 10 pounds of coffee beans that costs $10 per pound to have a new blend of coffee that costs $4 per pound?

Click here to see answer by ikleyn(52781)

Question 1048952: The percent error in a measurement is the ratio of the error in the measurement to the measurement itself, expressed as a percent. When writing a computer program, the memory remaining is determined as 2650 bytes and then it is correctly found to be 2700 bytes. What is the percent error in the first reading?

Click here to see answer by Theo(13342)

Question 1049054: In the lab, Lashonda has two solutions that contain alcohol and is mixing them with each other. She uses 4 times as much Solution A as Solution B. Solution A is 13% alcohol and Solution B is 18% alcohol. How many milliliters of Solution B does she use, if the resulting mixture has 350 milliliters of pure alcohol?

Click here to see answer by stanbon(75887)

Question 1049113: Sarah has 65 milliliters of a 30% solution. How many millimeters of 75% solution should she add to obtain the required 35% solution?
Click here to see answer by josmiceli(19441)

Question 1049134: i am having 5 kg solution of 60%, and i want to make it to 55% solution.
so how much water to be added to make it 55% soution?
thanks,

Click here to see answer by josgarithmetic(39617)

Question 1049186: frank had c dollars to begin with, he just spent 20 dollars. Using c, write an expression
for the number of dollars he has left.
Click here to see answer by Alan3354(69443)

Question 1049231: How many milliliters of a 40% solution of battery acid must be added to 30 milliliters of an 8% solution to make a 20% solution of acid?
Click here to see answer by addingup(3677)

Question 1049257: A car wheel has a 15 inch radous. Through what angle does the wheel turn whwn the car rolls forward 3 ft?
Click here to see answer by josmiceli(19441)

Question 1049370: A specialty store owner mixes peanuts worth 3.60 per pound with cashew nuts worth 8.40 per pound. How many pounds of each type of nut is needed to make a 12 pound mixture worth 6.80 a pound?
Click here to see answer by jorel555(1290)

Question 1049469: How long will a crew of workers take to mow y acres of corn, if each worker mows z acres?
Click here to see answer by ikleyn(52781)

Question 1049469: How long will a crew of workers take to mow y acres of corn, if each worker mows z acres?
Click here to see answer by hussamuddin(51)

Question 1049498: A famous batsman scored a century in 38 overs.If he could keep up the same run rate,how many runs would be scored in 47.5 overs?
Click here to see answer by stanbon(75887)

Question 1049656: A pie dough uses the ratio of 1 part liquid to 4 parts flour. Using proportions, solve to find the amount of the flour needed for the following amounts of liquid.
.5# water
Click here to see answer by josgarithmetic(39617)

Question 1049659: How many gallons of a 50% antifreeze solution must be mixed with 100 gallons of 10% antifreeze to get a mixture that is 40% antifreeze?
Click here to see answer by Alan3354(69443)

Question 1049761: A coffe mixture has beans that sell for $0.72 a pound and beans that sell for 0.52. If 110 pounds of beans create a mixture worth $0.74 a pound, how much of each bean is used? Model a scenario then solve it. Explain if it is reasonable or not! Help!
Click here to see answer by ikleyn(52781)

Question 1049766: a pharmacist has 40 ml of a 25% antibiotic solution and needs to dilute it to a 10% solution. How many ml of water should she add
Click here to see answer by Alan3354(69443)

Question 1049766: a pharmacist has 40 ml of a 25% antibiotic solution and needs to dilute it to a 10% solution. How many ml of water should she add
Click here to see answer by ikleyn(52781)

Question 1049826: Dan mixed 11 liters of cranberry juice into 12 liters of apple juice that had 34 percent sugar. if the cranapple mixture was 43 percent sugar, what was the percent of sugar in the cranberry juice?

Click here to see answer by stanbon(75887)

Question 1049828: melanie mixed 8mL of a salt solution with 9mL of a 49% salt solution, to make a 48% salt solution. find the percent salt concentration of the first solution.
Click here to see answer by ikleyn(52781)

Question 1049829: melanie has two bags of nuts; one with 63% peanuts, and the other with 21% peanuts. to make a 4lb bag of 45% peanuts, how much of each should melanie use?
Click here to see answer by ikleyn(52781)

Question 1049830: sara needs 11lb of metal with 45% silver. if sara combines one metal with 7 % silver, and another with 80% silver, how much of each metal does sara need?
Click here to see answer by ikleyn(52781)

Question 1049841: The manager of a store selling tea plans to mix a more expensive tea that costs $ 9 per pound with a less expensive tea that costs $ 3 per pound to create a 70 pound blend that will sell for $ 4.80 per pound. How many pounds of each type of tea are required?
Click here to see answer by addingup(3677)

Question 1049834: at most, how many grams of a 42% alcohol solution can be added to 20 g of a 60% alcohol solution, if the resulting solution is to contain at least 50% alcohol?
Click here to see answer by josgarithmetic(39617)

Question 1050039: How many liters of a 3% acid solution and how many liters of a 13% acid solution should be mixed to get 10 liters of a 6%acid solution?
Click here to see answer by ikleyn(52781)

Question 1049985: aylssa dumped 9 lbs of a bag of apples with 52 % red apples, into a bag of 10 lbs which contained 43% red aplles. what is the new percent of red apples
Click here to see answer by josmiceli(19441)

Question 1050060: Solve and Show your solution
A chemist has to mix a 25 percent acid solution with a 35 percent acid solution. How many liters of each should be mixed to make 20 liters of 32 percent acid solution?
Click here to see answer by ewatrrr(24785)

Question 1050198: A 12l solution that was 16% vinegar was mixed with a 7l solution that was 65% vinegar. Find the new concentration of vinegar.
Click here to see answer by josgarithmetic(39617)

Question 1050198: A 12l solution that was 16% vinegar was mixed with a 7l solution that was 65% vinegar. Find the new concentration of vinegar.
Click here to see answer by ikleyn(52781)

Question 1050192: while at the post office Mrs. Adams purchased $2.39 worth of stamps. The number of 3 cent stamps exceeded four times the number of 6 cent stamps by 1. Also the number of 3 cent stamps was 13 less than the number 2 cent stamps. How many of each kind did she purchase?
Click here to see answer by jorel555(1290)

Question 1050350: Please help me solve this word problem: How many grams of sugar must be added to 60 grams of a solution that is 32% sugar to obtain a solution that is 50% sugar?
Click here to see answer by ewatrrr(24785)

Question 1050368: Harry has twice as many quarters as dimes and the same number of dimes as nickels. All together he has $19.50. Find the number of each type of coin.
Click here to see answer by advanced_Learner(501)

Question 1050369: A radiator contains 6L of a 44% antifreeze mixture. How much pure antifreeze should be added to a mixture that is 52% antifreeze?
Click here to see answer by Alan3354(69443)

Question 1050326: The number of farms in the country was 2.16 million in 2000. By 2006; the number had dropped to 2.07 million. What was the percent of decrease? Round to nearest tenth of a percent.
Click here to see answer by Fombitz(32388)

Question 1050364: A coffee distributor needs to mix a(n) Rift Valley coffee blend that normally sells for $8.60 per pound with a Kona coffee blend that normally sells for $13.20 per pound to create 10 pounds of a coffee that can sell for $12.74 per pound. How many pounds of each kind of coffee should they mix?
Please dear tutors help me
Click here to see answer by jorel555(1290)

Question 1050367: Medium-sized eggs are worth 42 cents per dozen and large-sized eggs are worth 47 cents per dozen. If Mr.Davis sells 12 dozen more of the large-sized eggs than the medium-sized eggs, and if he received a total of $35.01 for the eggs, how many of each did he sell?
Click here to see answer by jorel555(1290)

Question 1050529: During one month, a homeowner used 300 units of electricity and 130 units of gas for a total cost of $110.30. The next month, 220 units of electricity and 250 units of gas were used for a total cost of $97.90. Find the cost per unit of gas.
Click here to see answer by advanced_Learner(501)

Question 1050528: Flying with the wind, a plane flew 1200 mi in 5 h. Against the wind, the plane required 6 h to fly the same distance. Find the rate of the plane in calm air and the rate of the wind
Click here to see answer by ikleyn(52781)

Question 1050621: I laboratory tech nation needs to make a 21 L batch of a 40% acid solution how can the laboratory technician combine a batch of an acid solution that is a peer acid with another that is 10% to get the desired concentration
Click here to see answer by josmiceli(19441)

Question 1050619: a recipe for a rice dish calls for 12 oz of a rice mixture that is 20% wild rice and 8 oz of pure wild rice. what is the percent concentration of wild rice in the 20-ounce mixture?
Click here to see answer by josmiceli(19441)

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