Questions on Algebra: Proportions answered by real tutors!

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Question 762361: If a:b = 3:5, b:c = 5:7, c:d = 14:3. Find a:b:c:d?
Click here to see answer by Manesu(1)

Question 762547: In a mixture of raisins and dates, the ratio by weight of raisins to dates is 7 to 3. How many pounds of raisins will there be in 7 pounds of this mixture?
Click here to see answer by stanbon(75887)

Question 762684: The semester ratio of quizzes to test is 6:1. If there are 77 grades taken during the semester, how many are test?
Click here to see answer by solver91311(24713)

Question 763274: The nutritional chart on the side of the box of breakfast cereal states that there are 120 calories in a 1 1/3 cup serving. How many calories are there in 7 cups of the cereal?

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Question 750221: three over B equals six over five
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Question 745053: The fourth term of a proportion is 7 more than its first term. Write the proportion if its second term is 3 and its third term is 6.
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Question 753705: 16/(x-1)=(x-1)/4
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Question 744394:
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Question 737535: Express this sentence as a formula: z varies directly with the square of s.
A. z = s^2
B. z = k/s^2
C. z = ks^2
D. z = 1/s^2
I believe the correct answer is D, I just wanted to confirm.
Thank you.
Click here to see answer by tommyt3rd(5050)

Question 731345: If a:b = 4:3 and b:c = 6:5, what is a:c?
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Question 726432: sum of 25% & 15% of a number is 144. Find 45% of that number.
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Question 763287: 2/5 S= - 1/7
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Question 764013: Write the equation of a line in slope-intercept form that is parallel to the line y=3x+2 and passes through the point (5,2).
Click here to see answer by jim_thompson5910(35256)

Question 764048: To estimate the number of bass in a lake, wildlife biologists tagged 50 bass and released them in the lake. Later they netted 108 bass and found that 27 of them were tagged. Approximately how many bass are in the lake?

I tryed that tag/total=tag/total way, but I am getting really confused. I know you have to cross multiply. But what I am confused about is where to plug in the numbers or if matters where they are plugged at.
Thank you in advance for trying to help or even help me. :)
Click here to see answer by Edwin McCravy(20054)

Question 764384: word problem probably a proportion d=rt I am stuck setting it up.
As part of an exercise regimen, you walk 2 miles on an indoor track. Then you jog twice your walking speed for another 2 miles. If the total time spent walking and jogging is 1 hour, find the walking and jogging rates.
Click here to see answer by stanbon(75887)

Question 764960: this actually goes with measurements, but I don't get word problems like this. Please help. Thanks --> On a map, the distance between
two towns is 4 inches. The actual
distance between the towns is
380 miles. What is the scale of the map?
Click here to see answer by Cromlix(4381)

Question 765111: How many times bigger is a human to a bed mite?
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Question 765132: Please help me solve this. If you have a recipe that calls for 1 1/4 cups of water to 3 cups of flour, How many cups of water would you need for 2 cups of flour.
I have tried using 5/4 for the water and multiplying and can't seen to get the answer.
Click here to see answer by Cromlix(4381)

Question 729217: Use a proportion to determine the number of gallons of coffee needed each morning.
Click here to see answer by tommyt3rd(5050)

Question 765710: Can you help me solve (r-5)6
Click here to see answer by MathLover1(20849)

Question 765978: How do you do a proportion? Like 4/1=x/16
Click here to see answer by solver91311(24713)

Question 766848: 22 carat gold is mixed with 18 carat gold in the ratio 1:2 to get x carat gold . then the value of x is ?
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Question 766956: (7/x)=(4/x)+7
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Question 767371: x/2=4/7
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Question 768079: On a map with a scale of 1:250,000, a measured distance of 4.5 inches represents an actual distance of:_____ miles

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Question 768390: The pitch of a roof is the ratio of the rise to the half-span. If a roof has a rise of 8 feet and a span of 20 feet, what is the pitch?
Click here to see answer by fcabanski(1391)

Question 768380: If you drive 189 miles on 13 1/2 gallons of gas, what is the simplified ratio of miles to gallons?
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Question 768388: If a 153-mile trip took 8 1/2 gallons of gas, how many miles can be driven with a full tank of 18 gallons?
Click here to see answer by rfer(16322)

Question 481289: 24-carat gold is pure gold.
18 carat gold is 3/4 gold.
20- carat gold is 5/8 gold.
the ratio of pure gold in 18 carat gold to pure gold in 20 carat gold is ?
Click here to see answer by abdullahkhawer(5)

Question 768679: Solve the proportion 12 over 42 equals x over 14.. What is the value of x?

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Question 768903: If M varies directly as n, and m=9, when n=6, find m when n=15
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Question 769625: Suppose that W is inversely proportional to V. If W=20 when V=12, find V=15
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Question 769714: IF 6B+20= A,AND 4B+30=A,THEN=
Click here to see answer by ramkikk66(644)

Question 769718: IF 6B+20=A ,AND 4B+30=A,THEN=bB

a.-5
b.-1
c.1
d.5

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Question 741229: how to do comparing ratios word problem
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Question 743272: 6m:120cm Please solve and show me the steps
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Question 730883: Dave made a scale drawing of a new library on a sheet that is 8 ft. by 10 ft. he needs to reduce the dimensions of the drawing to 1/4 of the original size. What is the area of the new drawing?

Click here to see answer by tommyt3rd(5050)

Question 761756: ratio between boys to girls is 7:5 and there are total 60 students.how many more boys are there than girls?
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Question 768627: if 3/8 of an inch is proportional to 15 inches, how many inches are proportional to six feet
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Question 766993: solve for the given variables
4/(x+2)= 16/(x+5)
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Question 755254: What is the unit rate of 84 pages read in 16 minutes
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Question 767620: if a bike has a 30% discount sale & is now $91 how much was the bike originally?
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Question 771781: please help me find an equation of the line satisfying the following condition which passing through the x-axis at -5 and has a slope of 4/3

Click here to see answer by MathLover1(20849)

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