Questions on Algebra: Proportions answered by real tutors!

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Question 183038: karen wants to bake a cake. The recipe calls for 2 cups of flour.
karen only has 28 tablespoons of flour. What percent of a cake can she bake?
Ok so ive figured out that 1 cup has 16 tablespoons
so 2 cups is 32 tablespoons, but since she only has 28, thats where i get confused because i dont know how to find the percentage of the cake she could bake.
please help me
Click here to see answer by jim_thompson5910(35256) About Me 
Question 183008: Darla bicycled at an average rate of 15 miles per hour in a 60 kilometer race. Determine the lenght of time in hours that it took her to complete the race.(hint: 1.6 kilometers= 1 mile)
please help
Click here to see answer by stanbon(75887) About Me 
Question 183090: identify the amount,base,and p value of 25% of 400cars is 100 cars
45 of 50 children is 90%
in a recent survey38% ofUnited States say that gas prices have affected the type 0f vehecle they will buy. In a sample of 500 people who are in the market for a new vehcle,how many would you expect to be influenced by gas prices?
Yellowstone National Park has 3366mi.2 of undevelopedland. If this represents 99% of the totalarea,fine the total area of the park?
As of the2002--2003 football season,Peyton Manning had completed 1357 passes out of 2226 attempts. Find his completion percetage to the nearest tenth of a percent.
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Question 183121: I sent some problems to you last night,just want to make sure you recieved Thank You Betty
Click here to see answer by Alan3354(69443) About Me 
Question 184053: 6 over 11 = 3 over x
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Question 184052: 17 over 10 = 8.5 over x
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Question 184075: I would like help with the following problem

A flagpole is 12.5 m tall. It casts a 17.5-m shadow. How tall is a
nearby radio tower that casts a 61.25-m shadow?

All help with my problem is greatly appreciated.Thank You:)
Click here to see answer by vleith(2983) About Me 
Question 184073: I would like help with the following problem

Solve by using a proportion. If the answer does not come out evenly,
round it to the nearest hundredth.
You read 500 words in 3 minutes. At that rate, how many words would
you read in 20 minutes?

All correct answers are greatly appreciated.Thank You:)
Click here to see answer by vleith(2983) About Me 
Question 184074: I would like answer to the following problem.

A boy 1.6 m tall casts a 2.4-m shadow. How tall is a nearby streetlight
that casts a 7.2-m shadow?

All correct answers are greatly appreciated.Thank You:)
Click here to see answer by solver91311(24713) About Me 
Question 184072: I would like help with the following question.

Solve by using a proportion. If the answer does not come out evenly,
round it to the nearest hundredth.
You earn $33 in 8 hours. At that rate, how much would you earn in
5 hours?

All direct answers are greatly appreciated:)
Click here to see answer by solver91311(24713) About Me 
Question 184071: I would like help with the folllowing problem :)

Solve by using a proportion. If the answer does not come out evenly,
round it to the nearest hundredth.
You buy 3 cassette tapes for $18.48. At that rate, how much will 4
tapes cost?

All direct answers I recieve are greatly appreciated,Thank You
Click here to see answer by Alan3354(69443) About Me 
Question 184024: Change 4 5 10 and 11 into a fraction
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Question 184016: Hi,
Please help me. I cant figure this one out:)
Express the phrase as a ratio in lowest terms:
36 to 49.5
Click here to see answer by checkley77(12844) About Me 
Question 184903: Asking for some gentle guidance please.
Solve each equation. # 43 on page 147.
0.5x+2 2.25x+27
_______ = _____________
3 9
In case this looks bad.... 0.5x+2 OVER 3 = 2.25x+27 OVER 9

I have done the following:
9(0.5x+2) = 3(2.25x+27)
Do I need to move the decimals? It does not seem to matter thus far in getting the correct answer. I know to cross cancel but with the decimals I am getting a tad confused perhaps.
4.5x+18 = 6.75x+81
Subtract 4.5x from both sides
18= 2.25x+81
Subtract 81 from both sides
-63 = 2.25x
Divide -63 from both sides
and I get the wrong answer which I hope you see what I am doing wrong!
The answer is to be {-28}
I am over thinking this I am sure and it is late. I shall leave this and hope for a pleasant, helpful push in the correct direction to solve this in the AM.
Thank you for your time and help!
moly


Click here to see answer by edjones(8007) About Me 
Question 184841: The proportion is 1:54. I have 2 rectangular prisms the larger one has a surface area of 12936 inches squared, and the volume is 27588 inches cubed. how would I find the surface area and volume of the smaller shape.
Click here to see answer by jojo14344(1513) About Me 
Question 185106: 300/24=18/j
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Question 185876: *Frozen (quarter-pound) hamburger patties cost $5.80 for 12. How many can be purchased for $7.00?
If you could show your work that would really help.
Thanks so much
Click here to see answer by edjones(8007) About Me 
Question 186341: If one pump takes 12 minutes to fill a tank and another pump takes 20 minutes to fill the same size tank, how long would it take both pumps working together to fill one of the tanks?
Click here to see answer by feliz1965(151) About Me 
Question 186922: Going to Austin, Bill caught a ride for two-third of the total distance with a friend. He then took a bus for one-fourth of the total distance. He walked the remaining 10 miles to arrive at his destination. What was total distance of his destination?
Click here to see answer by josmiceli(19441) About Me 
Question 186933: You wish to mix wine with 25% alcohol and peach schnapps with 50% alcohol to obtain a different drink. How many liters of wine would you need to make 20 liters of the mixture with a 40% alcohol content?
Could you help me set up the table to solve this I'm completely lost and I don't know where to put what in the table and what to do with it afterword.
Click here to see answer by ptaylor(2198) About Me 
Question 187058: The sum of a number and its reciprocal is 10/3. What is the number?
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Question 186970: A retail store buys a dvd player from a manufacturer for $140. The store then marks up the price by 115%. What is the retail price of the dvd player?
Click here to see answer by checkley77(12844) About Me 
Question 187331: I have 2 questions I can't seem to figure out, and I can't find examples to apply in the text. The first is a word problem...
"Barry paddles his boat to his campsite with a 4 km/hr current: It takes him 3 hrs. On his way back to the same point agisnt the current, the trip takes him 7 hours. What is the speed of Barry's boat in still water?:,(and why should I care?) I have tried finding a formula containing a current, and I can't find one...
Click here to see answer by josmiceli(19441) About Me 
Question 187422: a sheet of steel 8 1/4 feet long weight 325 pounds. A piece 2 1/2 feet long is sheared from the sheet. determine the weight of the 2 1/2- foot piece to the nearest whole pound.
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Question 188034: if 2cm=3kilometers, what is the approx. distance of 3.4 km?
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Question 188230: An artist wants her painting to be in the shape of a golden rectangle. if the length of the painting is 36 inches, then what should be the width?
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Question 188210: 16 is what percent of 34?
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Question 188210: 16 is what percent of 34?
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Question 188639: 50% of 3h is -30
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Question 188750: Sarah drives from Baltimore to Ocean City at an average speed of 65 miles per hour. If the distance is 160 miles, how long will the trip take?
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Question 188958: loni has read 25% of a book. if she has been reading for 5 hours how many more hours will it take her to complete the book
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Question 189104: what is 8100 divided by 66.6
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Question 189548: The difference between the prices of a coach ticket and a first class ticket is $135. If the first class ticket is 175% of the cost of a coach ticket what is the cost of the coach ticket?
Click here to see answer by ankor@dixie-net.com(22740) About Me 
Question 189944: How do I solve this proportion problem?
3 over 5 over b equals 8 over 5
I know I need to cross multiply somewhere I'm just not sure where?
Click here to see answer by cutepiscean5(19) About Me 
Question 190044: I need help on solving this propportio.
4/7=n/11
Click here to see answer by Mathtut(3670) About Me 
Question 190185: brand x has 4 oz. and cost 1.40
brand y has 6 oz. and cost 2.16
which brand is the beter buy?
Click here to see answer by jojo14344(1513) About Me 
Question 190185: brand x has 4 oz. and cost 1.40
brand y has 6 oz. and cost 2.16
which brand is the beter buy?
Click here to see answer by solver91311(24713) About Me 
Question 190264: The ratio of boys to girls in a classroom is 3:5. If the number of girls exceeds the number of boys by 8, how many boys and how many girls are in the class room?
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Question 190276: To determine the number of bass in a lake, a conservationist catches 54 bass, tags them, and returns them to the lake. Later, 32 are observed and 8 are tagged. Estimate how many bass are in the lake.
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Question 189732: x/3 = 2/5
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Question 190412: The ratio of two numbers is 3:4. Their sum is to the sum of their squares as 7 is to 50. Find the numbers. (Thanks for your help.)
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Question 190581: Lydia plans to use a photocopy machine to increase the size of a small chart that she has made as part of her science project. The original chart is 4 inches by 5 inches. If she uses a scale factor of 5:11, will the chart fit on a sheet of 8 1/2 inches by 11 inches? Explain.
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Question 190579: 1- The editor of the school newspaper must reduce the size of a graph to fit in one column. The original graph is 2 inches by 2 inches, and the scale factor from the original to the reduced graph is 8:3. Find the dimensions of the graph as it will apper in one column of the newspaper.
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Question 191046: Billie earned $412 for a 40 hour week. if she missed 10 hours of work last week, how much did she get paid?
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Question 191190: The scale of two similar rectangles is 3:4. The area of the smaller rectangle is 207 square centimeters. What is the area of the larger rectangle?
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