Questions on Algebra: Proportions answered by real tutors!

Tutors Answer Your Questions about Proportions (FREE)

Question 229458: I need an example on how to solve a proportion using multiplication property of equality
Click here to see answer by drj(1380)

Question 229543: solve for u
-8u+5(u-3)=-18
Click here to see answer by vleith(2983)

Question 229728: Plane A leaves LA for NY at 500 mph, at the same time plane B leaves NY for LA at 650 mph. The towns are 3000 miles apart. How will it take for the planes to meet.
Okay I know distance = rate x time and can figure out that it will take 6 hours for plane A to complete the 3000 miles and 4.6 hours for plane B but how do I set up an equation using distance to find out when the planes will meet?
Click here to see answer by Alan3354(69443)

Question 229922: A bag contained 20 stamps and you used 2/5 of them. How many stamps did you use?
Click here to see answer by edjones(8007)

Question 230410: If y varies directly with x and y = -4.5 when x = 13.5, find x when y = 24.
Click here to see answer by stanbon(75887)

Question 230785: 5 over 8,20 over 32. OK, what you need to do is cross multiply. You multiply 5 and 32 and then multiply 8 and 20. The you get 'the answer' = 'the answer'

Click here to see answer by 42130(1)

Question 230797: My instructor wants to make a wall chart of a computer desktop for this class.She would like the desktop icons to be proportional to the size of her 6x6 chart. if the icons are 3/8 by 3/8, how large should be on her wall chart.
Click here to see answer by Theo(13342)

Question 231114: n/4=0.3/1.5
Click here to see answer by user_dude2008(1862)

Question 231274: the length of a rectangle is 4ft more than twice the with. The area of the rectangle is 48ft squared. Find the length and width of the rectangle.
Click here to see answer by checkley77(12844)

Question 231485: I need help with this problem: 3a/7=-2/5
It's a proportion.
Click here to see answer by Alan3354(69443)

Question 231691: A customer desires to mix her own concrete. The clerk knows that the ratio of cement to sand to gravel is 1:3:4. If the customer needs 1,000 pounds of dry mix, how many pounds of each ingredient should she use?
Please use cross products
Click here to see answer by checkley77(12844)

Question 232586: WHAT IS 37% OF 74
Click here to see answer by rfer(16322)

Question 232897: find the value of x.
x-3 over 8 = 3 over 4

Click here to see answer by unlockmath(1688)

Question 232920: find the value of x.
6x-2 over 7 = 5x+7 over 8
Click here to see answer by rfer(16322)

Question 233342: The ratio of men to women at a certain company is 5 to 6 How many male employees does the company have if there are 66 employees?

Click here to see answer by stanbon(75887)

Question 234219: Hello I Need Help With This Proportion x/6=2/9
Click here to see answer by Alan3354(69443)

Question 234362: k/3+=8
Click here to see answer by Lady of the Sith(6)

Question 208192: A Boeing 747 jet is approximately 230 ft long and has a
wingspan of 195 ft. If a scale model of the plane is about
40 cm long, what is the model�s wingspan?

Click here to see answer by msteesie(1)

Question 235196: 8/15= x-5/6
Click here to see answer by rfer(16322)

Question 235600: please help me solve this word problem:
Maria can write a paper an average of 4 pages during a 90 min. class period. At this rate,how many hours will it take her to write 16 pages?
create the proportion then solve.
This is what I did: 4/90=16/x, then i multiplied them and then i divided the number I got to 4. I got:x=360. But my teacher got x=6... Please tell me how she got that.
thank you
Click here to see answer by rfer(16322)

Question 235551: I have a question about scale drawsing and models. I am in 8th grade math. I know 1 inch equals 3 feet. I am trying to find the scale of a drawing that is 28 feet wide. On the drawing the apartment is 7 inches wide. I want to know how to create an equation to figure this out and other problems like this. Thanks!
Click here to see answer by solver91311(24713)

Question 235818: The ratio of men to women at a certain company is 5 to 8 How many employees does the company have if there are 65 male employees?

Click here to see answer by checkley77(12844)

Question 236121: Hi im really stuck on this question:
m+10/6m=7/8 they are supposed to be fractions. Im really not sure how to do this. I would really appreciate your help
-Thanks Drea
Click here to see answer by stanbon(75887)

Question 236133: I really need help.
n+2/15=n-4/25 they are fractions
Thanks
-Drea
Click here to see answer by Alan3354(69443)

Question 236142: Lebron James plays for the Cleveland Cavaliers and shoots on average twenty one times per game. Out of those twenty one shots he makes nine on average. If Lebron took three hundred and fifty seven shots for the month of November how many shots did he miss? What percent of the total shots were misses? Makes?
Click here to see answer by Theo(13342)

Question 236199: Solve the equation using the quadratic formula.
2x2 = -12x - 3

Click here to see answer by checkley77(12844)

Question 236386: 6/? =62/217
Click here to see answer by checkley77(12844)

Question 236384: 100/30 = 7????
Click here to see answer by Jeff Gordon(65)

Question 236383: 52/91 = 42???
Click here to see answer by Jeff Gordon(65)

Question 236382: 49/56 = 32?
Click here to see answer by Jeff Gordon(65)

Question 236381: 24/40 = 30??
Click here to see answer by Jeff Gordon(65)

Question 236640: Two numbers are such that their difference, their sum and their product are to be one another as 1:7:24. What is the product of the two numbers?
Click here to see answer by checkley77(12844)

Question 236708: What is 74% of 110 using the percent proportion.
Click here to see answer by stanbon(75887)

Question 236940: 5/X = X/20
Do I use the positive solution, the negative solution, or both?
Click here to see answer by checkley77(12844)

Question 236940: 5/X = X/20
Do I use the positive solution, the negative solution, or both?
Click here to see answer by solver91311(24713)

Question 236958: Solve the following motion problems. Set up an equation and solve.
A boy rode his bicycle into the country at the rate of 15 miles per hour and returned over the same route at 12 miles per hour. If he was bicycling for 4.5 hours, how far into the country did he ride?

Click here to see answer by checkley77(12844)

Question 236956: The length of the skid mark of an automobile sliding to a stop is directly proportional to the square of the velocity. It was found that a car traveling 60 miles per hour left a skid mark 172 feet in length when attempting to stop. Find the length of the skid marks of a car traveling 50 miles per hour.
Click here to see answer by RAY100(1637)

Question 237537: Dr. Wong can see 10 patients in 3 hours. At this rate, how long would it take her to see 30 patients?
Click here to see answer by edjones(8007)

Question 237855: What is the cost for 1 bun when 6 buns cost $0.85
Click here to see answer by rfer(16322)

Question 237859: the amount of gold is measured in karats(K), where 24K represents pure gold. the mark 14K on a chain indicates that the ratio between the mass of the gold in the chain and the mass of the chain is 14:24. If a gold ring is marked 18K and it weighs 0.04 oz, what is the value of the gold in the ring if pure gold is valued at $300 per oz?
Click here to see answer by stanbon(75887)

Question 237999: Bacteria grow by cell division. If each cell divides into 2 in every 2 minutes how many cells will exist after 32 minutes? Assume there was only one cell at the beginning
Click here to see answer by nerdybill(7384)

Question 238161: If there are 142 people and there are 42 more women than men how many women would there be
Click here to see answer by JimboP1977(311)

Question 238166: the length of a rectangular width is 10 ft less than the length and the perimeter of 44 ft what should be the length
Click here to see answer by checkley77(12844)

Question 238225: A rare disease that affects 2 out of every 1,000 trees has been discovered. What percent of trees are affected?
Click here to see answer by JimboP1977(311)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265