# Questions on Algebra: Proportions answered by real tutors!

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 Algebra: Proportions Solvers Lessons Answers archive Quiz In Depth

 Question 12145: The ratio of nitrogen to phosphorus to potash in a fertilizer is 7 : 5 : 3. If there are 35 kg of nitrogen, calculate the mass of the phosphorus and the mass of the potash. Click here to see answer by rapaljer(4667)

 Question 12382: using the numbers 2,4,6,8,and10 exactly once with any operation signs and grouping symbols to write an expresion equal to 0 Click here to see answer by hmj(6)

 Question 12642: I need to know how to find 68% of 50 Is there any way you can give me the formula or a way to find the % of whole numbers like that? Click here to see answer by AdolphousC(70)

 Question 12757: A model airplane is made to the scale 1 inch to 24 inches. If the wing of the actual plane is 18 feet long, how long will the model wing be? Click here to see answer by Earlsdon(6287)

 Question 12764: The ratio of teachers to assistants to children at a day care center is 2:1:9. Of the 96 people at the center,how many of them are children? Click here to see answer by kusha(21)

 Question 12751: Two out of 3 students in Mr.Pearson's ninth grade class recycle aluminum cans. If 48 students recycle aluminum cans,how many students are in Mr.Pearson's class? Click here to see answer by kusha(21)

 Question 12959: Bill gave one-third of his jellybeans to a friend, ate two-thirds of the remaining jellybeans, and had eight jellybeans left over. How many jellybeans did Bill have originally? Click here to see answer by verde(1)
 Question 12959: Bill gave one-third of his jellybeans to a friend, ate two-thirds of the remaining jellybeans, and had eight jellybeans left over. How many jellybeans did Bill have originally? Click here to see answer by ans_virgo4@hotmail.com(2)

 Question 13265: Two cities on a map were 2 1/4 in. apart. The cities are actually 56.25 miles apart. What scale was used to draw the map? Click here to see answer by akmb1215(68)

 Question 12766: Write an equation and solve the following: Four times a number decreased by twice the number is 100. What is the number ? Click here to see answer by elizabeth2005(20)

 Question 13730: The lengths of three sides of a triangle are in the ratio 3:5:6. The perimeter of the triangle is 28 cm. Find the lengths of each side of the triangle. Click here to see answer by rahman(247)

 Question 14363: If John paints a house in 4 hours and Cindy paints a house in 6 hours, how long would it take them if they painted the house together?? HELP! Click here to see answer by Earlsdon(6287)

 Question 14924: What is the answer to An 8-ounce bottle of lotion costs \$4.50. What is the cost per ounce? Click here to see answer by Drpengui(15)

 Question 15124: solve these proportions. One of the examples in my text book was 65/10 = 13/x 10 x x/63+63 x 2/9 x=14 I dont get how to do any of these I get how you times the top left corner w/ the bottom right corner and the bottom left coner w/the upper right corner but after those steps I dont get also heres a problem im on. 3/8 + 12/x Click here to see answer by Earlsdon(6287)

 Question 15267: HOW TO SOLVE THE RATIO OF 2 TO 5=(?)% Click here to see answer by rapaljer(4667)

 Question 16218: Can you do 5/24=X/600 ??? I can't do it but I can do all other proportions.... Click here to see answer by elima(1433)

 Question 16692: my son is in 7th grade aap math. we are having problems understanding the teachers example. could anyone help show how to work 3(x+6) step by step thank you Click here to see answer by elima(1433)

 Question 17086: how do you figure out whether 5/8=2/9 is proportion? Click here to see answer by venugopalramana(3286)

 Question 17672: A recipe for 2 1/2 dozen whole sheat muffins requires 600g of flour. How many muffins can be made with 900g of flour? Click here to see answer by rapaljer(4667)

 Question 17671: Deborah has a recipe that makes 4 dozen chocolate chip cookies. It requires 2 cups of chocolate chips for every 5 cups of flour. If she needs 36 cookies, how many cups of chocolate chips will she need? Click here to see answer by rapaljer(4667)

 Question 17697: Hello, my question is a pre-algebra one and I have tried to work it out like this, but first of all the question is: A factory manufactured 30,000 tennis blls in 2 weeks. Out of every 1000 tennis balls produced 15 defective. What proportion can be used to find the number of tennis balls, t, that were judged to be defective in the 2 weeks? This is how I worked it out: 30,000 tennis balls = 1,000 tennis balls ___________________ __________________ 15 defective t = 15(1,000) = 15,000 = 30,000(t) __________ = ___________ 30,000 = 30,000t t= 0.5 Could you please let me know if I missed something or if I worked it correctly? Thank you, Karissa Click here to see answer by xcentaur(357)

 Question 17913: I tried so many times to get the answer but i can't the problem is What percent of 16 is 5? The first thing i did i put 100 for the deominator then i put x for the numirator then i multiplied across. then i seen if it could be reduced and i still couldn't get my answer. Click here to see answer by whisper(27)

 Question 18963: Please help me solve this problem A rock show is being televised the lead singer, who is 75 inches tall, is 15 inches tall on a tv monitor. The image of the bass player is 13 inches tall on the monitor. How tall is the bass player? Click here to see answer by piglet162431(90)

 Question 19324: A leaky faucet wastes 1/20 gallon of water each hour.In how many hours will 3/4 be used@ Click here to see answer by Alwayscheerful(414)

 Question 19548: how can i make a make a circlegraph to display each set of data.and this hw is due tommorrow so HELP!!!!!!!!! Click here to see answer by xcentaur(357)

 Question 20077: How do you solve multiplication problems with three proper fractions? For example: 2 1/2*1/5*11/3 Click here to see answer by pwac(253)

 Question 20391: Moonshine has 50 liters of 70% alcoholic solution. How many liters of pure alcohol would you need to add to make an 80% solution? 70% solution 50liters .70(50 + p) Alcohol p 1.00p 80% solution 50 + p .80(50 + p) ? Click here to see answer by Paul(988)

 Question 20678: what is the proportion of 6 /X = 9/12? Click here to see answer by elima(1433)