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Tutors Answer Your Questions about Linear Equations And Systems Word Problems (FREE)
Question 224143: A small publishing company is planning to publish a new book. The production costs will include one-time fixed costs (such as editing) and variable costs (such as printing). The one-time fixed costs will amount to $17,750 . The variable costs will be $12.75 per book. The publisher will sell the finished product to bookstores at a price of $19 per book. How many books must the publisher print and sell so that the production costs will equal the money obtained from sales?
Click here to see answer by ankor@dixie-net.com(6691)   |
Question 224501: A cable company charges $75 for installation plus $20 per month. Another cable company offers free installation but charges $35 per month. For how many months of cable service would the total cost from either company be the same?
a)2 b) 3 c) 5 d) 7
Click here to see answer by stanbon(26259)  |
Question 224664: Working together, Joanne, Kent, and Geoff can process 504 orders per day for their business. Kent can process 20 more orders per day than Joanne can process. Geoff can process 104 fewer orders per day than Kent and Joanne combined. Find the number of orders that each person can process per day.
Click here to see answer by ankor@dixie-net.com(6691) |
Question 224788: in order to achieve maximum results from aerobic exercise, one should maintain ones heart rate at a certain level. a 35 year old woman with a resting heart rate of 70 beats per minut should keep her heart rate between 139 and 162 beats per minute while exercising she checks her pulse for 10 seconds while exercising what should the number of beats be?
the number of beats in 10 sec should be between___and ____beats.
Click here to see answer by LtAurora(115)  |
Question 224813: Water from 2 hoses of different diameters can fill a swimming pool in 4 hours when used simultaneously. If each hose is used separately it takes 6 hours longer to fill the pool with the smaller diameter hose than with the larger diameter hose. Suppose the time taken to fill the pool using only the smaller diameter hose is T hours.
(i) what fraction of the pool is filled in 4 hours by the smaller diameter hose?
(ii) what fraction of the pool is filled in 4 hours by the larger diameter hose?
iii form an equation and solve it to find the time taken to fill the pool if only the smaller diameter hose is used.
Click here to see answer by ankor@dixie-net.com(6691) |
Question 224937: This word problem was assigned in my Calculas class.
I think the answer is b but I can not set it up using algebra to solve. Please help.
Suppose we have a cup of coffee and a cup of cream containing an equal volume of liquid and suppose we do the following:
1. Transfer a Tablespoon of cream and put it into the cup of coffee. We stir it in completely.
2. We then transfer a tablespoon of the cream-in-the-coffee mixture back into the cream cup and stir completely.
AFter these steps decide which of these statements is true(in the sense of volume)Explain your answer using ALGEBRA.
a.There is more coffee in the original "cream cup" than there is cream in the original "coffee cup".
b.There is more cream in the original "coffee cup" than there is coffee in the original "cream cup".
C. None of the above.
Click here to see answer by scott8148(3382)  |
Question 225212: A shirt cost 15.00 more than a pair of shorts. Terrell Paid 101 for 3 shirts and 5 pairs of shorts. How much did each shirt cost?.
Could you please show me how to work this problem. My child is having a hard time and I cant remember how. IT has been to long.
I have p+15=s
3s+5p=101
I get stuck after that.
Click here to see answer by LtAurora(115) |
Question 225337: THe sume of two numbers is 90. If 20 is added 3 times the smaller number, the result exceeds twice the larger number by 50. Let A represent the smaller number and let B represent the larger number.
a+b=90
Click here to see answer by LtAurora(115) |
Question 225375: THis question is coming from Quantitive Methods and concerns Marginal and Joint probability. It is a 2 part question. I completely do not understand how to solve this problem. I do not understand how to formulate to solve:
"A metro school system consists of 2 districts: north and south. The north district contains 60% of all students and the south district contains 40% of all students. A competency test was given to all students. 10% of the north district failed and 15% of the south district failed."
Question A: What is the probability that a student from the entire school system, chosen at random, has passed?
Question B using Bayes Rule: What is the probability that a student who has failed the test came from the South District?
Any help is learning how to EASILY formulate and solve would be appreciated. Thanks!
Click here to see answer by scott8148(3382) |
Question 225723: I posted this problem earlier but no one responded. I have figured out every problem except this one and need some help. particularly with how to formulate:
"A fair die is rolled nine times. What is the probability that an odd number 1,3, or 5 will occur LESS than three times?"
If there are six sides to a fair dice, I would start like this 3/6 ^9 or 1/2^9 which would equal 1/512...I am lost from there. HELP!! Thanks!
Click here to see answer by solver91311(5072)  |
Question 226031: A girl scout troop sold cookies. If the girls sold 5 more boxes the second week than they did the first, and if they doubled the sales of the second week for the third week to sell a total fo 431 boxes of cookies, how many did they sell each week? Please show me how to set up this problem. Thank you very much.
Cheyenne
Click here to see answer by scott8148(3382) |
Question 226104: Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 80 miles per hour and train B is traveling at 84 miles per hour. Train A passes the station at 3:25 A.M. If train B passes the same station at 3:55 A. M., at what time will train B catch up to train A?
Click here to see answer by checkley77(7035) |
Question 226451: System of equations:
A laboratory assistant is asked to mix 30% alcohol solution with 21 liters of an 80% alcohol solutuion to make a 60% alcohol solution. How many liters of the the 30% alcohol solution should be used.
Click here to see answer by josmiceli(3003) |
Question 226450: Write a system of equations:
Ann has $5000 to invest. She invests in two different accounts, one expected to return 4.5% and the other expectedto return 9%. In order to earn $320.50 for the year, how much should she invest at each rate.
Click here to see answer by rfer(2688) |
Question 226385: A commercial building was built in 1 - 7/8 months by 20 skilled workers and 30 unskilled laborers. If 30 skilled men were contracted the group alone would have erected the facility in 2 months time, How long should it take one unskilled worker alone to complete the job?
Click here to see answer by ankor@dixie-net.com(6691) |
Question 227099: The average hourly wage of employees of a certain company is $9.83. Assume the variable is normally distributed. If the standard deviation is $4.58, find the probability that a randomly selected employee earns less than $5.43.
Click here to see answer by Theo(672)  |
Question 227832: 2. As you are leaving the community, you notice another new community just down the street. Because you are in the area, you decide to inquire about it.
a) The sales representative here tells you they also have two floor plans available, but they only have 38 homes available. Write an equation that illustrates the situation. Use x and y to denote floor plan #1 and floor plan #2 respectively.
b) The representative tells you that floor plan #1 sells for $175,000 and floor plan #2 sells for $200,000. She also mentions that all the available houses combined are worth $7,200,000. Write an equation that illustrates this situation. Use the same variables you used in part a.
c) Use elimination to determine how many houses with each floor plan are available. Explain how you arrived at your answer.
I am totally clueless. I am familiar with word problems, and the elimination method. I have a major problem attempting to figure out how to translate the given information into an equation. I cannot solve for something that I cannot first translate. PLEASE HELP!!!
Click here to see answer by stanbon(26259) |
Question 227497: 4.4. A person invested 17,000 for one year, part at 10% part at 12%. The total annual income from these investments was 716. The amount of money invested at 12# was 300.00 more than the amounts invested at 8% and 10% combined. Find the amount invested at each rate. PLEASE HELP>>>>>>>>I AM LOOOOOSSSSSSSTTTTTTTT
Click here to see answer by ankor@dixie-net.com(6691) |
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