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Tutors Answer Your Questions about Mixture Word Problems (FREE)
Question 80386: 60. Business and finance. A coffee merchant has coffee beans that sell for $9 perpound 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 bucky(1732)   |
Question 82188: Imagine that you have just been elected the Mayor of Small City America. The City charter clearly stated that you are not allowed to run a budget deficit. Your first day in office, you asked the city controller to come over to your office for a “let me know what is happening” type of discussion. After drinking tea, you get down to business.
The controller informed you that the city founder believed in a simple fixed tax system. Currently, each city resident is tax at $1000 per year. The controller informed you that the city needs $1-million per year just to function even if there is no population to support. In addition to the fixed cost of running the city, the city needs to provide services to the residents. In order to help understand the cost of servicing the local population, the controller said that a local community college professor modeled the servicing cost, and said that the cost would be represented in the form of 0.2X2, where X is the number of city residents.
Write the quadratic equation the models the city’s budget (Expected Revenue versus the Expected Cost).
At what population level would the city run its maximum budget surplus, and what is the value of the maximum budget surplus?
What is the highest number of people the city can support without running a deficit?
Click here to see answer by stanbon(26252) |
Question 82666This question is from textbook Intermediate Algebra
: A farmer keeps some animals on a strict diet. Each animal is to receive 14.7 grams of protein and 7.9 grams of carbohydrates. The farmer has two food mixes with nutrients shown in the illustration. How many grams of each mix should be used to provide the correct nutrients to the animal?
Mix Protein Carbohydrates
Mix A 12% 9%
Mix B 15% 5%This question is from textbook Intermediate Algebra
Click here to see answer by stanbon(26252) |
Question 83248: Help me please! A coffee and tea shop wishes to blend a $3.50-per-pound coffee with a $4.75-per-pound coffee in order to produce a $4-per-pound blend. How much of each would hve to be used to produce 100 pounds of the nw blend?
Click here to see answer by ptaylor(1578)  |
Question 83873: Heritage National Bank offers two different checking accounts. The first charges $3 per month, and $.50 per check after the first 10 checks. The second account charges $8 per month with unlimited check writing. How many checks can be written per month if the first account is to be less expensive than the second account?
Click here to see answer by Nate(3495) |
Question 84494: An automobile radiator contains 16L of antifreeze and water. This mixture is 30% antifreeze. How much of this mixture should be drained and replaced with pure antifreeze so that there will be 50% antifreeze? (Not from a textbook.) I'm ok to solve is just adding antifreeze, but can't figure out how to set it up so that the solution is drained and replaced with pure antifreeze.
Click here to see answer by scott8148(3382)  |
Question 85236: Problem:
Working together, pipe I and Pipe II can fill a tank in 12 hours. Pipe I takes twice as long as pipe II to fill the tank. How long would it take for pipe II, working by itself, to fill the tank.
solution: Suppose pipe II takes x hours,
then pipe I takes 2X hours.
together they take 12 hours.
so x + 2x = 12hours
3x = 12
x = 4
But I was told that my problem is wrong... and it is to solved using the formulae: work done = rate * time.
I got this problem in my exam so i do not have the ISBN.
Plz help me find answer for this
Thanking u in advance..
Click here to see answer by stanbon(26252) |
Question 85295: Problem:
The length of a rectangular poool is 40 feet. the width is 24 feet. A walkway of uniform width surrounds the pool. The combined area of the pool and walkway is 2240 sqft. Find the width of the walkway?
Solution:
40s+40s+24s+24s = 2240
128s = 2240
s = 17.5
I dont know how to go about it... I know this is wrong!!!!
Plz help!!!! I do not have the ISBN because that is from one of my exams .
Click here to see answer by checkley75(3666) |
Question 85385: Kindly solve this problem....
1 What amount of each mixture, one 95% alcohol and the other 15% alcohol must be used to make 10 Liters of a mixture which is 45% alcohol?
What equation or equations will express this problem?
Thank you so much...
Click here to see answer by j_joy20@yahoo.com(1) |
Question 85392: Please help me with this problem:
A 9% solution of acid was mixed with a 30% solution of acid to make an 18% solution. How much 9% solution and how much 30% solution were used to make 21L of 18% solution?
I start down this road:
.09x+.3y=.18
I just don't know where to go on this one... Thanks for any help!
Click here to see answer by stanbon(26252) |
Question 85501: Please help me with this problem as I am terrible at math. It comes from a worksheet.
A pharmacist has 1 liter of a solution that is 22% alcohol. How much pure alcohol must be added to bring the solution up to 27% alcohol
Click here to see answer by Nate(3495) |
Question 85501: Please help me with this problem as I am terrible at math. It comes from a worksheet.
A pharmacist has 1 liter of a solution that is 22% alcohol. How much pure alcohol must be added to bring the solution up to 27% alcohol
Click here to see answer by stanbon(26252) |
Question 85592: Gina is going to a party and was asked to bring 3lbs of mixed nuts that includes cashews and peanuts. If the cashews cost $6.00 per pound and the peanuts cost $1.50 per pound, how many pounds of each did she buy if her total cost was $9.00?
I know the answer from doing it in my head, I just need help setting up the equation properly on paper. Thanks for your input / time!
Click here to see answer by ptaylor(1578) |
Question 85988: A researcher orders a broth of 7.5% glucose for her lab. However, she needs a stronger broth, one that is 24.9% glucose. Fortunately, she has 26.9 liters of 36.1% glucose broth in the stock room. How much 24.9% glucose broth can she make?
Click here to see answer by Earlsdon(4898) |
Question 85990: An investment club wants to invest $17,000 in two simple interest accounts. One account earns 6.5% annual simple interest and the other account earns 8.3% annual simple interest. How much should be invested in each account so that both accounts earn the same annual interest?
Click here to see answer by checkley75(3666) |
Question 85989: Marcus is inventing a new cookie recipe. He'd like the recipe to contain both walnuts and gourmet chocolate chip chunks. Walnuts sell for $1.40 per pound and gourmet chips sell for $2.60 per pound. How many pounds of walnuts should be mixed with 3 pounds of gourmet chips to obtain a mixture selling for $1.76 per pound?
Click here to see answer by ptaylor(1578) |
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