# Questions on Algebra: Proportions answered by real tutors!

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 Algebra: Proportions Solvers Lessons Answers archive Quiz In Depth

 Question 580441: I need help with this word problem: The scale drawing of a rectangular park uses a scale of 1 centimeter= 74 meters. The drawing is 11 centimeters by 18 centimeters. What are the actual dimensions of the park? Click here to see answer by jim_thompson5910(28595)

 Question 580556: The ratio of the price of coffee A to coffee B is 2:3. During a certain month, a store sells coffee A and coffee B in the ratio of 4:5. If the total revenue from the sale of these two coffees is \$27,600, how much of the revenue was from the sale of coffee A? Please explain. Thanks. Click here to see answer by mahalingk(2)

 Question 581812: Translate the following statement into an equation. Seven less then twice a number is 4 more than the number Click here to see answer by nerdybill(6958)

 Question 582421: a is directly proportional to b and inversely proportional to the square of c. if a=7 when b=9 and c=6, find a when b=4 and c=8 Click here to see answer by Edwin McCravy(8909)

 Question 582452: Please help me to solve this question =/ The sum of Ken's LDL and HDL cholesterol is 210, and his LDL to HDL ratio is 2.75. What are his LDL and HDL? Click here to see answer by Alan3354(30993)

 Question 582573: There are 4 girls for every 3 boys on band. If there are 120 girls in band, how many total boys are there ? I have the anwser just need help Click here to see answer by Edwin McCravy(8909)
 Question 582573: There are 4 girls for every 3 boys on band. If there are 120 girls in band, how many total boys are there ? I have the anwser just need help Click here to see answer by scott8148(6628)

 Question 584982: A 60 foot rope is cut into three parts in the ratio of 3:4:5. Find the longest piece. Click here to see answer by rfer(12660)

 Question 585034: Ann bought 30 pens at RS 4.50 each. If she had used this amount of money to buy pencils at 3 for RS 5, how many pencils could she have bought? I have solved this question, the answer is 81 but I have to explain to the 5th grade student. What is the easiest way to explain? Thanks. Click here to see answer by josmiceli(9678)

 Question 585022: A fraction has a reduced ratio of 2:5. When 5 is added to both the numerator and the denominator, the new reduced ratio is 1:2. Find the original fraction. Click here to see answer by richwmiller(9135)

 Question 586513: a car travels 220 mi. in 4 h. Click here to see answer by Alan3354(30993)

 Question 587091: use the porportion x over z = 6 over 5. complete each statment x+z over z Click here to see answer by xdragonfight(116)

 Question 589329: a bottle of soap cost \$3.45 for 64 ounces what is the cost per ounce Click here to see answer by Alan3354(30993)

 Question 589916: The gross federal debt y (in trillions of dollars) for a certain country in year x is approximated by the following equation, where x is the number of years after 2000. Y=0.4x+5.17 In what year will the federal debt be \$6.37 trillions? Click here to see answer by solver91311(16885)

 Question 590360: how do I work this problem x-8 over 5 is equal to 2 over 4 Click here to see answer by rfer(12660)

 Question 590823: how many pounds are in 1 1/4 tons Click here to see answer by jim_thompson5910(28595)
 Question 590823: how many pounds are in 1 1/4 tons Click here to see answer by stanbon(57347)

 Question 591451: A package of eight candies costs \$12.96 Write a proportion that can be used to determine the cost of a package of 3 candies. Solve your proportion to determine the cost of a package of 3 candies. Click here to see answer by derangoj(14)

 Question 591616: julga,vuyani and khusela are sharing an amount of R176 in the ratio 4:5:7 .calculate how much money each of them wil receive. Click here to see answer by nerdybill(6958)

 Question 591795: r u ugly? obviously im the only one in the world who is hot. Click here to see answer by solver91311(16885)

 Question 592221: The Empire State Building reaches feet at the top floor. Keira has a model of this landmark building that is 8 inches tall. What is the scale between the model and the actual building? Click here to see answer by jim_thompson5910(28595)

 Question 593780: Please help me solve this questions.=) QUESTION 1 Let p1 denote the proportion of people who were unemployed in March, and let p2 denote the proportion of people who were unemployed in April. Suppose that during late March, the government instituted policies designed to lower the unemployment rate. We want to test whether the policies were effective. In March, in a random sample of 1200 people, 75 were unemployed. During April, in an independent random sample of 1100 people, 65 were unemployed. Carry out the appropriate hypothesis test using a 3.5% level of significance. QUSTION 2 Susan is a sales manager of a fast food company with 100 branches. The company’s sales target for each branch in March is at least RM 500 (in thousands). From a sample of 36 branches, the average sale in March is RM 485 (in thousands) with standard deviation of RM 32.4 (in thousands). a. Can Susan infer that the company’s sales target has been met for March at 5% significance level? b. Susan and her team introduced a new sales strategy in April to increase the sales in each branch. The total expenses of new strategy for each branch are RM 20 (in thousands). From a new sample of 21 branches, the average sale in April is RM 514 (in thousands) with standard deviation of RM 12.1 (in thousands). Is there enough evidence to say that the new strategy introduced in April is effective and profitable to the company at 5% significance level? c. Based on the results in (b), what type of error could possibly occur? Explain the effect of this error to the fast food company. QUESTION 3 For a certain year a study reports that the percentage of college students using credit cards was 83%. A college dean of student services feels that this is too high for her university, so she randomly selects 50 students and finds that 40 of them use credit cards. At α = 0.04, is she correct about her university? QUESTION 4 A magazine article stated that the average age of women who are getting married for the first time is at most 26 years. A researcher decided to test this hypothesis at 2.5% significance level. She selected a sample of 25 women who were recently married for the first time and found the average was 25.1 years. The standard deviation was 3 years. Is the claim true? QUESTION 5 A composition teacher wishes to see whether a new grammar program will reduce the number of grammatical errors her students make when writing a two-page essay. The data are shown here. At α = 0.01, can it be concluded that the number of errors has been reduced? Errors before 12 9 0 5 4 3 Errors after 9 6 1 3 2 3 thank you,=) Click here to see answer by Sarpi(32)

 Question 594368: An army of 2400 men has a stock of food sufficient for 50 days. After 10 days 800 men joined the army. For how many days will the food be sufficient now? If the ratio of one was reduced by 1/3 for how many days will the stock last? Click here to see answer by ankor@dixie-net.com(15652)

 Question 594754: PLEASE HELP ME A SEAMSTESS IS MEASURING A MODEL FOR A NEW DRESS. THE TAPE MESAURE IS MARKED IN CM. THE SEAMSTRESS NEEDS TO CONVERT THAT MEASURMENT INTO INCHES. IF THE MODELS WAIST MEASURMENT IS 65.4 CM, WHAT IS THE CONVERSOION IN INCHES? Click here to see answer by Edwin McCravy(8909)

 Question 595187: 15 men working 7 hours a day can finish a piece of work in 15 days. How many days will it take for 12 men working 8 hours a day to finish it? Click here to see answer by ankor@dixie-net.com(15652)

 Question 595340: An old pump takes 6 hours longer to empty a pool than does a new pump. With both pumps working, the pool can be emptied in 4 hours. Find the time for the new pump working along to empty the tank Click here to see answer by ankor@dixie-net.com(15652)

 Question 595502: There are 991 people at the annual comic book convention. Sixty percent of the people at the convention are under 30 years old. Estimate the number of people at the convention who are under 30 years old. Click here to see answer by edjones(7569)

 Question 596289: A woman who is 5 feet tall casts a 12-foot shadow across a lawn while a nearby tower casts a 42-foot shadow. How tall is the tower? Click here to see answer by math-vortex(472)

 Question 596456: Which of the following numbers is equivalent to 45%? Click here to see answer by Alan3354(30993)

 Question 596455: The scale on a map reads 1 inch = 12 miles. How many miles apart are the two cities that are 2 3/4 inches apart on the map? Click here to see answer by Alan3354(30993)

 Question 596460: Yashae has \$21 and wants to buy as much granola as possible. If granola is \$2.89 per pound, which answer below represents the approximate amount of granola that Yashae can buy? Click here to see answer by shervanique(2)

 Question 596755: what is the ratio of 12 to 17 using fractional notation Click here to see answer by unlockmath(1599)

 Question 597159: what is the ratio of 17 1/2 inches to 2 1/3 feet? Not sure how to start the problem , do I convert the fraction into a mixed number or just work with the improper fraction? Click here to see answer by richwmiller(9135)