# Questions on Word Problems: Linear Equations And Systems Word Problems answered by real tutors!

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 Linear Solvers Practice Answers archive Word Problems Lessons In depth

 Question 561339: Hi! Ok, I'm not really getting this question is says.. -P=3.25c-780 - If the above equation were to be graphed, what would be the slope of this graph? -I know the slope is 3.25 and since that's positive, so would the slope be positive? Thanks! I really appreciate it! Click here to see answer by jim_thompson5910(28715)

 Question 561561: Some bank robbers leave town, speeding at 71 mph. Ten minutes later, the police give chase, traveling at 78 mph. How long will it take after the robbery for the police to overtake the robbers? (Round your answer to three decimal places.) Click here to see answer by ankor@dixie-net.com(15746)

 Question 561727: Celeste want to have her hair cut and permed and also go to lunch. She knows she will need \$77. The perm costs twice as much as her haircut and she needs \$5 for lunch. Click here to see answer by TutorDelphia(193)

 Question 562318: What is the equation of a circle having endpoints of it's diameter at (7,9)and (1,3)? Click here to see answer by stanbon(57967)

 Question 562723: On an interstate highway the maximum speed is 70 miles per hour and the minimum speed is 45 miles per hour. If x represents speed, then write an inequality to express this condition Click here to see answer by mananth(12270)

 Question 562838: Question write a system of linear equations that has no solution my work x+y=8 -x-y=-8 Click here to see answer by issacodegard(60)

 Question 562904: A chemist needs to make 30 ounces of a 25% alcohol solution by mixing together a 15% alcohol solution with a 40% alcohol solution. How much of each should they use? Click here to see answer by Maths68(1474)

 Question 563101: Two high speed trains are 380 miles apart and traveling toward each other. They meet in 4 hours. If one train is 15 mph faster than the other, find the speed of each train. Click here to see answer by stanbon(57967)

 Question 563065: Norma and Lauretta went to a store to buy DVDs on sale for \$5 each,tax included. Norma purchased two and a half times as many DVDs as Lauretta purchased.Together they purchased 14 DVDs .Which system of linear equations can be used to determine n,the number of DVDs Norma puchased,and 1,the number of dvs lauretta purchased? Click here to see answer by scott8148(6628)

 Question 563486: I am trying to help my daughter with homework and apparently it has been too long since I last did algebra. Can you please help me understand so that I can help her? This is the problem: 21 animals total , all sheep and chickens. 56 legs total, how many of the 21 animals are sheep and how many are chickens? Thank you. Click here to see answer by mananth(12270)

 Question 563567: Kathi and Robert Hawn had a pottery stand at the annual skipcack craft fair. They sold some of their pottery at the original price of \$9.50 for each piece, but later decreased the price by \$2. If they sold all 90 pieces and took in \$713, find how many pieces they sold at the original price and how many pieces they sold at the reduced price? Click here to see answer by mananth(12270)

 Question 563680: i need help please? if one pen cost d dollars, what is the cost, in dollars, of 15 pens? Click here to see answer by jim_thompson5910(28715)

 Question 563703: Find an equation whose roots are the reciprocals of the roots of the equation 5x^2 + 15x - 2= 0 Click here to see answer by solver91311(17077)

 Question 563772: The sum of two numbers is 32. The difference between twice the larger number and three times the smaller number is 39. What are the numbers? Click here to see answer by nyc_function(2733)

 Question 563573: When a bucket is filled 3/8 of its capacity its weight is 10 kg. If it is filled 3/5 of its capacity its weight is 14.5 kg. How much will its weight be when it is filled to the full capacity? Click here to see answer by ankor@dixie-net.com(15746)

 Question 564175: The occupations of telephone operators, fishers, and sewing machine operators are among the ten with the largest Job decline from 2000-2012, according to the US department of labor. The number of telephone operators will decline 8000 more than twice the number of fishers. The number of sewing machine operators will decline 1000 less than 10 times the number of telephone operators. If the total decline of these three jobs is predicted to be 137 thousand, find the predicted decline of each job. Click here to see answer by KMST(1936)

 Question 564632: One number is 11 more than 3 times another number.  Their sum is 55.  Find the SMALLER number.  Click here to see answer by stanbon(57967)

 Question 565011: A van travels for two hours at an average speed of 40 miles per hour. For how long must the van then travel at an average speed of 55 miles per hour to raise the overall average speed to 45 miles per hour? What is the total time traveled? Click here to see answer by stanbon(57967)

 Question 565086: Find the present value that will give a future value of \$9,280 at 9.75 % compounded monthly for 2 years and 3 months. Click here to see answer by Edwin McCravy(8999)

 Question 565149: I am helping my daughter with her homework & I caanot remember how to do these. This is how the problem reads: A telephone booth that is 8feet tall casts a shadow that is 4 feet long. Find the height of a lawn ornament that casts a 2 feet shadow. Click here to see answer by jim_thompson5910(28715)

 Question 565054: Acme parts can produce padiator seal kit for \$7.50 with fixed set-up costs of \$395. They plan to market the radiator seal kits for \$22.95. Find the linear cost function Click here to see answer by KMST(1936)

 Question 565329: A boy can row a boat at a constant rate of 5 mi/hr in still water, as indicated in the figure. He rows upstream for 15 minutes and then rows downstream, returning to his starting point in another 10 minutes. Find the rate of the current. Find the total distance traveled. Click here to see answer by mananth(12270)

 Question 565493: Mrs.Martin bought 3 cups of coffee and 2 bagels and spent \$12.75. Mr.Martin bought 2 cups of coffee and 5 bagels and spent \$14.00. Write a system of equations that will allow you to find the cost of one cup of coffee and the cost of one bagel. Click here to see answer by ad_alta(240)

 Question 565965: A pot contains 4 L of brine at a concentration of 80 g/L. How much of the water should be boiled off to increase the concentration to 200 g/L? Click here to see answer by lwsshak3(6761)

 Question 566008: A man borrowed rs. 35000 for one-year. One part of it was taken at the rate of 12% p.a. And the remaining part at the rate of 14% p.a. (simple interest). If he had to pay rs. 4460 as interest, then find the two parts which were borrowed at different rates. Click here to see answer by mananth(12270)

 Question 566561: emily and Camille started from the same city and drove in opposite directions on the freeway. After 3 hours they were 354 miles apart. If they had gone in the same direction, Emily would have been 18 miles ahead of Camille. How fast did each woman drive? Click here to see answer by solver91311(17077)
 Question 566561: emily and Camille started from the same city and drove in opposite directions on the freeway. After 3 hours they were 354 miles apart. If they had gone in the same direction, Emily would have been 18 miles ahead of Camille. How fast did each woman drive? Click here to see answer by stanbon(57967)

 Question 566971: Keith has \$265 in \$5 bills and \$10 bills. He has 37 bills in all. How many of each kind does he have? Can you show me how to get the answer? Click here to see answer by solver91311(17077)

 Question 567146: The height, h (in feet), of a falling object on Mars is given by h=-6t2+s , where t is the time in seconds and s is the initial height in feet. If an object were dropped from a height of 125 feet, how long would it take to travel half the distance to the ground? Click here to see answer by josmiceli(9817)

 Question 567295: if c equals degree celsius and f equals degree Fahrenheit ,assume that the relationship between the two temprature scales is linear and is being graphed with f on vertical axis.two data points on the line relating c and f are (5,41)and (25,77).using the points to find slope intercept equation which allow transformation from Celsius temperature to equivalent Fahrenheit temperature. Identify and intercept the meaning of the slope, c intercept , and f intercept Click here to see answer by Alan3354(31530)

 Question 567468: The local train is 25 miles down the track from the Central Station when the express leaves he station.The local train travels at a rate of 50 mi/hr and the express train travels at a rate of 80 mi/hr.Let n represent the number of hours since the express train left Central Station. a.Write an expression that represents the express train's distance from Central Station in n hours. b.When will the express train catch up with the local train? Click here to see answer by lwsshak3(6761)
 Question 567468: The local train is 25 miles down the track from the Central Station when the express leaves he station.The local train travels at a rate of 50 mi/hr and the express train travels at a rate of 80 mi/hr.Let n represent the number of hours since the express train left Central Station. a.Write an expression that represents the express train's distance from Central Station in n hours. b.When will the express train catch up with the local train? Click here to see answer by stanbon(57967)

 Question 567231: A pot contains 2 L of brine at a concentration of 100 g/L. How much of the water should be boiled off to increase the concentration to 200 g/L? Click here to see answer by ankor@dixie-net.com(15746)

 Question 567597: 1.A candy manufacturer has two grades of candy, selling at 75 cents and 90 cents a pound respectively. How many pounds of each must he use to make mixture of 150 pounds, to sell at 75 cents a pound? please, show your step by step solution.. 2. A tobacconist wishes to blend two grades of tobacco, costing 8 cents an ounce and 10 cents an ounce respectively, and to sell the mixture at 12 cents an ounce with a profit of 25 per cent of the cost.How many ounces of each kind must he used to the pound ? ( 1 lb. = 16 oz.) 3. A fruit dealer sold 9 dozen lemons and 16 dozen oranges for \$17.40.The following day he sold, at the same prices, 11 dozens lemons and 20 dozens oranges for \$21.60. Find the prices of his lemons and oranges. Click here to see answer by mananth(12270)

 Question 567631: In a chemistry class, 4 liters of a 4% silve iodide 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 ankor@dixie-net.com(15746)

 Question 568307: a painter can finish painting a house in 8 hours. Her assistant takes 10 hours to finish the same job. how long would it take for them to complete the job if they were working together? Click here to see answer by nerdybill(7008)

 Question 568352: p: The house is owned by an engineer q: The heat is solar generated r: The car is run by electric power Translate the statement into symbols, then construct a truth table and determine under what conditions the compound statement is true. The house is owned by an engineer and the heat is solar generated, or the car is run by electric power. I've gotten the first two columns down for the table p q 1 t t 2 t t 3 t f 4 t f 5 f t 6 f t 7 f f 8 f f Not sure how to continue or to label. Click here to see answer by stanbon(57967)

 Question 568695: t would cost 78.85 to buy three tickets in japan plus two tickets in switzerland. three tickets in switzerland plus two tickets in japan would cost 74.80. how much does an average movie ticket cost in each of these countries Click here to see answer by mananth(12270)

 Question 568947: kim want to complete 2/3 of algebra problems by 8pm. if she has x algrebra problems to complete, which inequality can she use to determine y, the number of algebra problems she wants to complete by 8pm? Click here to see answer by Theo(3504)

 Question 568976: Construct a truth table for (p ^ q) -> ~q Be sure to include all intermediate steps on your table. Because this has no assigned statements to it, I am confused as to how I would solve this. Click here to see answer by Theo(3504)

 Question 569118: Given p is false, q is true, and r is true, find the truth value of the statement (p V ~q) ↔ ~r. Show step by step work. What in the world is truth value and how do I prove it? Click here to see answer by jim_thompson5910(28715)

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