Questions on Algebra: Proportions answered by real tutors!

Tutors Answer Your Questions about Proportions (FREE)

Question 499463: Walter took a book from the library. On Monday he read 1/6 of the pages, on Tuesday he read 1/4 of the remaining pages, on Weds he read 2/5 of the remaining pages, and on Thursday he read 1/3 of the pages that still remained. On friday he read the final remaining 84 pages. How many pages were in the book
Click here to see answer by chessace(471)

Question 499570: The time T of travel of an automobile trip varies inversely as the speed V. At an average speed of 65mph, a trip took 4 hours. The return trip took 5 hours. Find the average speed of the return trip.
Click here to see answer by oberobic(2304)

Question 500664: Marvin is trying to find the height of a tree in the school yard. He is using the proportion __Marvins's Height__ = ___tree's height_
__Marvin's shadow length_ ___tree's shadow length__ (I couldnt get it to draw a line to where it would look like it is something on top over something on the bottom)
His height is 4 feet. His shadow length is 15 inches. The length of the tree's shadow is 12 feet. Marvin used the proportion 4/15 = tree/12. But that gave the tree's height as being shorter than Marvin's. What went wrong?
Click here to see answer by rfer(16322)

Question 501804: A map is drawn to scale such that 1/8 inch represents 65 feet. If the shortest route from your house to the grocery store measures 23 7/16 inches, how many miles is it to the grocery store?
Click here to see answer by Alan3354(69443)

Question 501807: A volleyball team wins 105 games, which is 70% of the games played. How many games were played?

Do you take 105 * .70 = 73.5 is that how you do that problem?

Click here to see answer by Alan3354(69443)

Question 502322: a masons can build a 12 meters long wall in 4 days. find how many masons are required to build the 27 meters long wall in 3 days?
Click here to see answer by ankor@dixie-net.com(22740)

Question 503013: Pi=3.14 right???? also

pi
Click here to see answer by richard1234(7193)

Question 424676: ratio/proportion: find x in the folling 1. 5:200:: x:40 x = 2. 1/2:2 :: 1/4: x x=____ 3. x:30 :: 4:10 x=____ 4. 0.05:x :: 0.15:30 x=_____ 5. 20:60 :: x:50 x=_____
Click here to see answer by sauci404(1)

Question 503433: 28/z = 24/z-5
What's the answer I have two and I need to know.
Click here to see answer by Edwin McCravy(20054)

Question 503544: 8/d= -12/30 I don't understand how to solve if you don't have a demominator.
Click here to see answer by jim_thompson5910(35256)

Question 503682: what is 40 feet to 140 feet as 8 feet is to 28 feet

Click here to see answer by oberobic(2304)

Question 503750: solve: (x+2)/(x-2)=(3x)/(3x-6)
Click here to see answer by Tatiana_Stebko(1539)

Question 506190: please help me solve this questions,,
1) A main natural gas pipeline feeds into three smaller pipelines, each of which is 2.6 km longer than the main pipeline. If the total length of the four pipelines is 35.4 km, what is the length of each section of the line?

2) A ski lift takes a skier up a slope at 50m/min. The skier skis down the slope at 150m/min. If one round trip takes 24 minutes, how long is the slope?
Click here to see answer by Sarah900(12)

Question 506674: Patty is 45 years old. She is 15 years older than twice her daughters age. How old is Patty's daughter?
Click here to see answer by jennywecas(28)

Question 507036: How do I convert 690 m/s to kilometers per hours?
Click here to see answer by xdragonfight(116)

Question 507492: what is the difference between the distance he walked this week and the distance he walked last week?
Click here to see answer by Edwin McCravy(20054)

Question 508023: Could you please show me the steps to get Least Common Multiple for 28,40,56
Click here to see answer by tinbar(133)

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(10551)

Question 508077: what is the fraction notation for the ratio of 8640 to 14400
Click here to see answer by rfer(16322)

Question 508077: what is the fraction notation for the ratio of 8640 to 14400
Click here to see answer by stanbon(75887)

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(69443)

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(8007)

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(24713)

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(22740)

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(22740)

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(16322)

Question 512621: solve this... 5 over 8 = t over 24

Click here to see answer by rfer(16322)

Question 512623: solve this... k over 9 = 10 over 18
Click here to see answer by rfer(16322)

Question 512623: solve this... k over 9 = 10 over 18
Click here to see answer by rosey51235(30)

Question 512623: solve this... k over 9 = 10 over 18
Click here to see answer by solver91311(24713)

Question 512625: solve this... r over 6 = 40 over 50
Click here to see answer by rfer(16322)

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(24713)

Question 512710: What is 0.6% of 70 and how do you solve it?
Click here to see answer by rfer(16322)

Question 513147: R is inversely proportial to the cube of S.
Click here to see answer by Alan3354(69443)

Question 513147: R is inversely proportial to the cube of S.
Click here to see answer by stanbon(75887)

Question 513144: x is directly proportional to the square of y
Click here to see answer by Alan3354(69443)

Question 513160: How do I find 25% of what is 28? Thank you
Click here to see answer by stanbon(75887)

Question 513160: How do I find 25% of what is 28? Thank you
Click here to see answer by Alan3354(69443)

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(75887)

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(16322)

Question 515922: What temperature is numerically the same in degrees Celsius and degrees Fahrenheit?
Click here to see answer by Alan3354(69443)

Question 515929: Identify the following amounts.
a. "Decidollar"
b. Centidollar"
c. Dekadollar"
d. Kilodollar"
Click here to see answer by rfer(16322)

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