Questions on Algebra: Proportions answered by real tutors!

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 Algebra: Proportions Solvers Lessons Answers archive Quiz In Depth

Tutors Answer Your Questions about Proportions (FREE)

 Question 508077: what is the fraction notation for the ratio of 8640 to 14400 Click here to see answer by stanbon(57282)

 Question 508023: Could you please show me the steps to get Least Common Multiple for 28,40,56 Click here to see answer by MathTherapy(1422)

 Question 509149: Please help me with this question Given that Y varies inversely as the cube root of X-5 and Y = 3, X = 13 form an equation connecting X and Y. Hence find X when Y = 2 Click here to see answer by Alan3354(30993)

 Question 509590: A triangle drawn on a map has sides of lengths 8 cm, 12 cm, and 13 cm. The shortest of the corresponding real-life distances is 120 km. Find the longest of the real-life distances? Please help me with this. Click here to see answer by edjones(7569)

 Question 509904: My friend and I are mixing blue and white paint in order to get a lighter shade of blue.I use 2 cups of blue paint and 1 cup of white paint. my friend uses 3 cups of blue paint and 2 cups of white paint. Which mixture is darker? Click here to see answer by solver91311(16872)

 Question 510774: I saw this problem: At Joe's Restaurant, one-fourth of the patrons are male and one-fifth of the patrons are from out of town. What proportion would you expect to be male and out of town? Someone answered it this problem like this: For this kind of problem, you mulitply the two fractions. So 1/4 x 1/5 = 1/20. We would expect 1/20 of the patrons to be both male and from out of town. Here is a way to visualize this. In Town Out of Town Total Male 4 1 5 Female 12 3 15 Total 16 4 20 Imagine that there are 20 people in the restaurant. Five are male (so 5/20 = 1/4) and 4 are from out of town (so 4/20 = 1/5). One way to show this is with the chart above. Only 1 person (1/20) is both male and from out of town. My question is: What is the reasoning behind the sentences below???? I don't understand that. For this kind of problem, you mulitply the two fractions. So 1/4 x 1/5 = 1/20. We would expect 1/20 of the patrons to be both male and from out of town. Click here to see answer by scott8148(6628)

 Question 510705: It took 2 hours for 1 person to sweep the yard. How long would it take 4 persons working at the same speed to do the same job? My attempt: Firstly, it has to take less than 2 hours since the number of persons has been increased. The # of persons has been increased by 3 so: Increase in persons/ Time = 3 / 2 1.5 hours. Click here to see answer by ankor@dixie-net.com(15645)

 Question 511040: if a certain amount of food will last 50 days for 200 soldiers, how long will it last if 50 soldiers are added at the end of 20 days? Click here to see answer by ankor@dixie-net.com(15645)

 Question 511762: Please help, my mom, dad and brother are no help! 8 over w-10 = 16 over w-5 = z+8 over w Click here to see answer by oberobic(2304)

 Question 512616: solve this proportion.. 16 over 7 = m over 21 Click here to see answer by rfer(12654)

 Question 512621: solve this... 5 over 8 = t over 24 Click here to see answer by rfer(12654)

 Question 512623: solve this... k over 9 = 10 over 18 Click here to see answer by rfer(12654)
 Question 512623: solve this... k over 9 = 10 over 18 Click here to see answer by rosey51235(25)
 Question 512623: solve this... k over 9 = 10 over 18 Click here to see answer by solver91311(16872)

 Question 512625: solve this... r over 6 = 40 over 50 Click here to see answer by rfer(12654)

 Question 512641: Terry walks 12 blocks to school each day. It takes him thirty minutes to get to school. If 12 blocks equal one third of a mile at waht unit rate is Terry walking to school? Click here to see answer by solver91311(16872)

 Question 512710: What is 0.6% of 70 and how do you solve it? Click here to see answer by rfer(12654)

 Question 513147: R is inversely proportial to the cube of S. Click here to see answer by Alan3354(30993)
 Question 513147: R is inversely proportial to the cube of S. Click here to see answer by stanbon(57282)

 Question 513144: x is directly proportional to the square of y Click here to see answer by Alan3354(30993)

 Question 513160: How do I find 25% of what is 28? Thank you Click here to see answer by stanbon(57282)
 Question 513160: How do I find 25% of what is 28? Thank you Click here to see answer by Alan3354(30993)

 Question 513154: R is inversel;y proportinal to the cube of S. Let k be the constant of proportionally. If R=2 and S=7, find the value of k. Click here to see answer by stanbon(57282)

 Question 513297: what't the answer to 24v = 288? Click here to see answer by umail08(87)

 Question 515922: What temperature is numerically the same in degrees Celsius and degrees Fahrenheit? Click here to see answer by rfer(12654)
 Question 515922: What temperature is numerically the same in degrees Celsius and degrees Fahrenheit? Click here to see answer by Alan3354(30993)

 Question 515929: Identify the following amounts. a. "Decidollar" b. Centidollar" c. Dekadollar" d. Kilodollar" Click here to see answer by rfer(12654)

 Question 515925: Choose the best estimate for the following temperatures. a. A good day to go skiing:-5 C, 15 C, or 35 C? b. Treat yourself for a fever: 29 C, 39 C, or 99 C? Click here to see answer by rfer(12654)

 Question 515934: The mass of one electron is 9.11 X 10(-28) grams. A uranium atom contains 92 electrons. Find the total mass of the electrons in a uranium atom. Express your answer in scientific notation. Click here to see answer by Alan3354(30993)

 Question 515985: how do you solve this: 2.3:3:____ •variable is empty... not an equation Click here to see answer by Alan3354(30993)

 Question 516265: Two numbers are in ratio of 7:11. If 7 is added to each of the number, the ratio becomes 2:3. Find the numbers. Click here to see answer by Maths68(1474)
 Question 516265: Two numbers are in ratio of 7:11. If 7 is added to each of the number, the ratio becomes 2:3. Find the numbers. Click here to see answer by gc2000(22)

 Question 516638: h\30=2\5 ?? help! Click here to see answer by oberobic(2304)

 Question 516637: i dont understand how to do any of these problems i cant understand my teacher when she explains it to me so can you please explain it to me so i can understnd Click here to see answer by richard1234(5390)

 Question 516667: 8 is 20% of what number? Click here to see answer by rfer(12654)

 Question 516660: 12 is 6% of what number? Click here to see answer by rfer(12654)

 Question 516728: can you show me how to solve this proportion? 7/9 = b/b-10 Click here to see answer by mananth(12270)

 Question 518980: Jessica purchased x shares of stock at \$32 per share. She sold all the stock for \$56 per share and made a profit of \$552. How many shares did Jessica purchase? Click here to see answer by jessica43(140)

 Question 519196: How would you solve 4y-8-2y=4? Click here to see answer by algebrahouse.com(1079)

 Question 519299: if a,b,c,d are in continued proportion, prove that (a+b)(b+c)-(a+c)(b+d)=(b-c)^2 Click here to see answer by Edwin McCravy(8893)

 Question 519546: the ratio of the length of a rectangle to its breadth is 9:4. if the perimeterof rectangle is 104cm, find the area of the rectangle. Click here to see answer by oberobic(2304)

 Question 519809: what is the solution to 4/9=r-3/6 Click here to see answer by jim_thompson5910(28536)
 Question 519809: what is the solution to 4/9=r-3/6 Click here to see answer by Alan3354(30993)

 Question 521267: Depakote is a medication whose purpose is to reduce the pain associated with migraine headaches. In clinical trials of Depakote, 2% of the patients in the study experienced weight gain as a side effect. Suppose a random sample of 30 Depakote users is obtained. Find the following probabilities: a. Exactly 3 experienced weight gain as a side effect b. 3 or fewer experienced weight gain as a side effect c. 4 or more experienced weight gain as a side effect. d. Between 1 and 4 patients, exclusive, experienced weight gain as a side effect. Click here to see answer by stanbon(57282)

 Question 521581: A car going 65 miles per hour traveled 15 miles farther tahn a car traveling 55 miles an hour in the same time. How far did each car travel during that time? Click here to see answer by josmiceli(9664)

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