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Question 73871: How many gallons of a 40% alcohol solution must be mixed with 70 gallons of a 21% slution to obtain a solution that is 30% alcohol
Click here to see answer by stanbon(26252)

Question 73913: A stamp collection consists of 5, 13, and 18 cent stamps. The number of 13 cent stamps is one less than twice the number of 5 cent stamps. The number of 18 cent stamps is five more than the number of 13 cent stamps. The total value of all the stamps is $2.60. Find the number of 13 cent stamps in the collection
Click here to see answer by uma(370)

Question 73912: How many pounds of hamburger that costs $1.10 per pound must be mixed with 50 pounds of hamburger that costs $1.80 per pound to make a mixture that costs $1.30 per pound?
Click here to see answer by ankor@dixie-net.com(6691)

Question 73967: I have spent about an hour on this mixture problem and can't seem to get the correct formula. Please help.
A service station manager is going to blend high octane gasoline worth 63 cents per gallon with low octane gasoline with 51 cents per gallon. If the resulting mixture is 210 gallons of gasoline, express the total value V of the mixture (in cents) as a function of the number of gallons x of high octane gasoline used.
Click here to see answer by ffc_01(9)

Question 74476: How many liters of water must be added to 8 liters of a 40% acid solution to obtain a 10% acid solution
Click here to see answer by scott8148(3382)

Question 74505: A tank holds 80 liters of a chemical solution. Currently the solution has a strength of 30%. How much of this solution must be drained and replaced with a 70% solution to get a strength of 40%?
Click here to see answer by stanbon(26252)

Question 74506: How many liters of a 14% alcohol solution must be mixed with 20 liters of a 50% solution to get a 30% solution?
Click here to see answer by checkley75(3666)

Question 74504: A contractor mexes concrete from bags of pre-max for small jobs. How many bags with 10% cement should he mix with 8 bags of 12.5% cement to produce a mix containing 11% cement?
Click here to see answer by checkley75(3666)

Question 74584: If you mix 140mL of a 60% acid solution with 200 mL of a 30% solution you get a 40 mL of a _______% solution.
Click here to see answer by Nate(3495)

Question 74584: If you mix 140mL of a 60% acid solution with 200 mL of a 30% solution you get a 40 mL of a _______% solution.
Click here to see answer by stanbon(26252)

Question 74583: What quantity of 60% acid solution must be mixed with 30% solution to produce 300mL of a 50% solution?
Click here to see answer by Nate(3495)

Question 74474: I have tried this problem several times and keep seem to come up with the right formula:
If I want to make the perfect 12 oz cup of chocolate milk, it requires that the mixture is 42% Hershey's Syrup. What I have right now is 8oz of a milk/syrup mixture that I know contains 30% syrup. What must the syrup concentration be in the remaining mixture that I must add in order to achieve perfection?
Click here to see answer by scott8148(3382)

Question 74642This question is from textbook Elementary Statistics
: Assume that the salaries of elemetary school teachers in the United States are
normally distributed with a mean of $32,000 and a standard deviation of $ 3000.
If a teacher is selected at random, find the probability that he or she makes more than $36,000.This question is from textbook Elementary Statistics

Click here to see answer by stanbon(26252)

Question 74649This question is from textbook Elementary Statistics
: SAT scores have a mean of 1026 and a standard deviation of 209. ACT scores have a mean of 20.8 and a standard deviation of 4.8. A student takes both test and scores 1130 on the SAT and 25 on the ACT. Compare the scores.This question is from textbook Elementary Statistics

Click here to see answer by stanbon(26252)

Question 74645This question is from textbook Elementary Statistics
: Lengths of pregnancies of humans are normally distributed with a mean of 268 days and a standard deviation of 16 days. Use the Emperical Rule to determine the percentage of women whose pregnancies are between 252 and 284 days.This question is from textbook Elementary Statistics

Click here to see answer by funmath(2873)

Question 74709: How many pounds of a chicken feed that is 50% corn must be mixed with 400 lb of a feed that is 80% corn to make a chicken feed that is 75% corn?
ISBN-978-0-618-50307-0 Intro-Algebra
Click here to see answer by ptaylor(1578)

Question 74730: Solve each of the following problems. Be sure to show the equations used for the solution.
Business and finance. A coffee merchant has coffee beans that sell for $9 per pound and $12 per pound. The two types are to be mixed to create 100 lb of a mixture that will sell for $11.25 per pound. How much of each type of bean should be used in the mixture?

Click here to see answer by ptaylor(1578)

Question 74733This question is from textbook Introductory Algebra
: How many gallons of a plant food that is 9% nitrogen must be combined with another plant food that is 25% nitrogen to make 10 gal. of a solution that is 15% nitrogen?This question is from textbook Introductory Algebra

Click here to see answer by ptaylor(1578)

Question 74741: How much water must be added to a barrel containing 48 gallons of a 10% salt solution to obtain a 6% salt solution?
Click here to see answer by ptaylor(1578)

Question 74742This question is from textbook Introductory Algebra
: This is the last one, I promise.
How many ounces of pure bran flakes must be added to 50 oz. of cereal that is 40% bran flakes to produce a mixtue that is 50% bran flakes?
Thanks so much for your help. I can now maybe do something else.
JaneThis question is from textbook Introductory Algebra

Click here to see answer by ptaylor(1578)

Question 74740This question is from textbook Introductory Algebra
: A hair dye is made by blending a 7% hydrogen peroxide solution and a 4% hydrogen peroxide solution. How many milliliters of each are used to make a 300-millilter solution that is 5% hydrogen peroxide?This question is from textbook Introductory Algebra

Click here to see answer by ptaylor(1578)

Question 74854: If you mix 140mL of a 60% acid solution with 200 mL of a 30% solution yu get a 340 mL of a _____% solution.
Click here to see answer by checkley75(3666)

Question 74854: If you mix 140mL of a 60% acid solution with 200 mL of a 30% solution yu get a 340 mL of a _____% solution.
Click here to see answer by ptaylor(1578)

Question 74968: Science and medicine. A pharmacist wishes to prepare 150 mL of a 20% alcohol
solution. She has a 30% solution and a 15% solution in her stock. How much of each should be used in forming the desired mixture?

Click here to see answer by psbhowmick(456)

Question 74981: Ten cups of a restaurants' house Italian dressing is made by blending olive oil costing $1.50 per cup with vinegar that costs $.25 per cup. How many cups of each are used if the cost of the blend is $.50 per cup?
Click here to see answer by funmath(2873)

Question 75758This question is from textbook Algebra 2: An Incremental Development

: The vat contained 40 liters of a 5 percent salt solution. How much of a 20 percent salt solution should be added to get a 10 percent salt solution?This question is from textbook Algebra 2: An Incremental Development

Click here to see answer by ankor@dixie-net.com(6691)

Question 75951: How many pounds of coffee worth 1.44 a pound should be mixed with 20 pounds worth 1.80 a pound a mixture worth 1.56 a pound?
Click here to see answer by ankor@dixie-net.com(6691)

Question 76086: A telephone number consist of seven digits the first three representing the exchange. How many different telephone numbers are possible with in the 537 exchange?
Click here to see answer by Cintchr(475)

Question 76674: A chemist needs 130 milliliters of a 65% solution but has only 56% and 95% solutions available. Find how many millimeters of each that should be mixed to get the desired solution.
Click here to see answer by checkley75(3666)

Question 76730: Martha can rake the leaves in her yard in 5 hours. Her younger brother can do the job in 6 hours How long will it take if they work together?
Click here to see answer by Edwin McCravy(2920)

Question 77099This question is from textbook ALGEBRA Beginning and Intermediate
: 38. Mixture of Medicine.
The dosage of a medicine ordered by a doctor is 40 milliliters (ml) of a 16% solution. A nurse has available both a 20% solution and a 4% solution of this medicine. How many milliliters of each could be mixed to prepare this 40-ml dosage?This question is from textbook ALGEBRA Beginning and Intermediate

Click here to see answer by ptaylor(1578)

Question 77180This question is from textbook
: If 800ml of a juice drink is 15% grape juice, how much grape juice should be added to make a drink that is 20% grape juice?This question is from textbook

Click here to see answer by rajagopalan(125)

Question 77642: In my algrebra class, we are currently solving word problems using graphing, substitution, or elimination. I have one question that I am absolutely stumped on. I cant figure out how to even begin to set the problem up. Here is the problem: A pastry chef created a 50ounce sugar solution that was 34% sugar from a 20% sugar solution and a 40% sugar solution. How much of the 20% sugar solution and how much of the 40% sugar solution were used? Can you please help me? ~Brandi~
Click here to see answer by Earlsdon(4898)

Question 77641: In my algrebra class, we are currently solving word problems using graphing, substitution, or elimination. I have one question that I am absolutely stumped on. I cant figure out how to even begin to set the problem up. Here is the problem: A pastry chef created a 50ounce sugar solution that was 34% sugar from a 20% sugar solution and a 40% sugar solution. How much of the 20% sugar solution and how much of the 40% sugar solution were used? Can you please help me? ~Brandi~
Click here to see answer by ankor@dixie-net.com(6691)

Question 77760: How much of an alloy that is 20% copper should be mixed with 200 ounces of an alloy that is 50% copper in order to get an alloy that is 30% copper? This is how I have set up the problem . My answer is 40 ounces, but does not work out when I replace the variable. Where did I go wrong? Thanks.
Click here to see answer by scott8148(3382)

Question 77960: A merchant wishes to mix candy worth $5 per lb with 40 lb of candy worth $2 per lb to get a mixture that can be sold for $3 per lb. How many pounds of $5 candy should be used?
Click here to see answer by ptaylor(1578)

Question 78043: Tickets for a play at the community theater cost $16 for an adult and $2 for a child. If 210 tickets were sold and the total receipts were $2380, how many of each type of ticket were sold?
Click here to see answer by tutorcecilia(2042)

Question 78042: Allen bought 20 stamps at the post office in 0.37 and 0.20 denominations. If the total cost of stamps was $7.06, how many 0.37 stamps did allen buy?
Click here to see answer by stanbon(26252)

Question 78147: How many gallons of a 70% alcohol solution must be mixed with 50 gallons of a 20% solution to obtain a solution that is 60% alcohol
Click here to see answer by stanbon(26252)

Question 78581: grade B syrup sells for $1.35/L less then grade A syrup.if 80L of grade B syrup is mixed with 40 L of Grade A syrup, the resulting mixture will be worth $1.85/L. what is the unit price for the two grades of syrup?
Click here to see answer by ankor@dixie-net.com(6691)

Question 78615This question is from textbook Elementary Statistics
: A card is drawn from a standard deck of 52 playing cards. Find the probability that the card is an ace or a black card.This question is from textbook Elementary Statistics

Click here to see answer by stanbon(26252)

Question 78614This question is from textbook Elementary Statistics
: A single six-sided die is rolled. Find the probability of rolling a number less than 3.This question is from textbook Elementary Statistics

Click here to see answer by stanbon(26252)

Question 78617This question is from textbook Elementary Statistics
: The probability that an individual is left- handed is o.11. In a class of 40 students, what is the probability of finding five left- handers?This question is from textbook Elementary Statistics

Click here to see answer by stanbon(26252)

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