Questions on Algebra: Proportions answered by real tutors!

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Question 699946: What is 9 over 24 = 12 over n?

Click here to see answer by rfer(16322)

Question 699974: Respected Sir/Mam ,
My question is :
QUESTION: a boy weighs 56.7kg.If he reduces his weight in the ratio 7:6, find his new weight.
Solution: Original weight of this boy =56.7kg
he reduces his weight in the ratio 7:6
His new weight =(6 x 56.7)/7=6 x 8.1=48.6kg
Actually I want to know that why we have multiplied 56.7 with 6 and why not with 7?

Please clear my doubt? Thank you in advance?

Click here to see answer by ankor@dixie-net.com(22740)

Question 700284: decimal number equivalent to 15/4 then find the exact value

Click here to see answer by rfer(16322)

Question 700284: decimal number equivalent to 15/4 then find the exact value

Click here to see answer by MathLover1(20849)

Question 700593: I need help solving 51/x+11=15/5
Click here to see answer by Alan3354(69443)

Question 700741: 8/x=2/5
x=
can you explain how to do it and also the answer I save this info to study
x/2=5/15
x=
Click here to see answer by Alan3354(69443)

Question 700909: What is the value of x in the proportion (x minus1) over 5 equals (4x plus 2) over 35?
Click here to see answer by neatmath(302)

Question 700906: Please help me with this problem.In this proportion 4/11 = 8/22 what are the means? What are the extremes? Thanks for your help.
Click here to see answer by checkley79(3341)

Question 700905: I need help with a word problem.King Kong and Godzilla are destroying cities.The ratio of cities destroyed by King Kong to those destroyed by Godzilla is 2:5.If the two together destroy a total of 35 cities,find how many cities each destroyed.Include a check.Thank you for your help.
Click here to see answer by checkley79(3341)

Question 700904: Can someone please help me with these two problems? Thank you! Solve each proportion and then check. x/12-x = 5/15 the second problem x+10/x-6 = x/x+4
Click here to see answer by checkley79(3341)

Question 700982: Can you help me solve this multi-step equation please!!
-16+5n+-7(-6+8n)+3
Click here to see answer by MathLover1(20849)

Question 701133: (8/(a-9))=5/(2a+1)
Click here to see answer by lynnlo(4176)

Question 702033: Person one is 5 foot tall and cast a shadow that is twice as long as person two. How tall is person 2?
Click here to see answer by rfer(16322)

Question 702059: Hi, I need help in solving this question.
5:3 and the losers scored 77 points, how many does the other team have?

Click here to see answer by RedemptiveMath(80)

Question 702100: the scale of the map is 2 cm to 21 km what is the actual size of 12.5

Click here to see answer by sofiyac(983)

Question 702098:
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Question 702591: A CAR TRAVLES 172 MILES USING 7 GALLONS OF GAS. AT THE RATE,HOW FAR CAN THE CAR TRAVEL USING 42 GALLONS OF GAS HOW DO I SET THESE TYPES OF PROBLEMS IM SO CONFUSED PLZZ HELP ME NOW

Click here to see answer by solver91311(24713)

Question 703198: no of fucked peaople is to no of non fucked peopls
Click here to see answer by Simnepi(216)

Question 703290: Margarita is 5 feet 4 inches tall. She casts a shadow that is 8 feet.When her younger brother Amado stands in the same spot, he casts a shadow that is 1 inch less that margaritas height.
How tall is Amado ?

Click here to see answer by RedemptiveMath(80)

Question 703740: If the perimeter of a rectangle is 54cm then how can I find the length and width?
Click here to see answer by Alan3354(69443)

Question 699985: A bag of rice weighs 8 ounces before it is cooked. The same bag of rice weighs 12 ounces after it is boiled in water. A large restaurant has 2,400 ounces of uncooked rice. Each pot used to boil the rice holds 120 ounces of water. How much will all of the rice that the restaurant has weigh after it is cooked?
Click here to see answer by josgarithmetic(39616)

Question 703922: what value of x makes this proportion true?
x/35= 3/7 I believe if i divide 35 by seven that would give the correct answer of 5. the other options are 7 11 and 15 and they dont make sense is this correct and if not how do i get the correct answer
Click here to see answer by DrBeeee(684)

Question 253033: The shadow of a building is 280 feet long. At the same time, a 5 foot tall boy's shadow is 2 feet long. How tall is the building? Please show me how to work out this problem.
Click here to see answer by Sunsensor(1)

Question 704179: What is the value of x in the proportion
x + 8 = x
------- ----
15 5
Click here to see answer by josgarithmetic(39616)

Question 704467:

The ratio of men to women working for a company 2 to 3 . If there are 54 men working for the company, what is the total number of employees?

Click here to see answer by checkley79(3341)

Question 704551: For a certain rectangle, the ratio of the shorter side to the longer side is 4 inches to 9 inches. How long is the shorter side, in feet, if the longer side is half a foot long?
Click here to see answer by jim_thompson5910(35256)

Question 704695: I hope this is the right place. Can you help? Here are the problem:s
Question # 1:
Identify the system as consistent or inconsistent, and dependent or independent.
3x - 9y=6
y=1/3x - 2/3

Question # 2:
A chemist has prepared two acid solutions, one which is 6% acid by volume and the other which is 10% acid. How many cubic centimeters of each should the chemist mix together to obtain 50 cm3 of 7.28% acid solution?
Question #3. Solve using any appropriate method. 0.1x + 0.5y=2
0.5x - 0.1y=1
If the system has an infinate number of solutions, use set builder notations to write th esolution set. If the system has no solution, state this.

Click here to see answer by josgarithmetic(39616)

Question 704891: carl scored 70% on a math test. if the test had 60 questions how many questions did he get wrong

Click here to see answer by jim_thompson5910(35256)

Question 704979: solve

7/x = 13/55
Click here to see answer by jim_thompson5910(35256)

Question 702223: solve for proportions
52 over 4 equals m over 5
Click here to see answer by jim_thompson5910(35256)

Question 705180: what is the answer to this math question?
x^2
___ -3+x= -3
7
Click here to see answer by josgarithmetic(39616)

Question 705307: I am not sure if this question is in the right area, but it is a question that I have in biology lab. It's calculating the number of grams needed of media necessary and the question is: The label of the medium calls for 30g/liter. You only have 7.5g of powdered medium available. How much re-hydrated media will that make?
Click here to see answer by josgarithmetic(39616)

Question 705347: Which of the following ratios correctly describes the cosine function?
A. opp/adj
B. app/hyp
C. adj/hyp
Click here to see answer by jim_thompson5910(35256)

Question 705348: Explain how to change 4/20 into a percent
Click here to see answer by jim_thompson5910(35256)

Question 705351: 8/28
Click here to see answer by jim_thompson5910(35256)

Question 705361: x/5 = 19
Click here to see answer by jim_thompson5910(35256)

Question 705444: What number is 35% of 160?
Click here to see answer by Alan3354(69443)

Question 705637: If 15 apricots cost 5.60 how much will apricots will cost 10.80?

Click here to see answer by rfer(16322)

Question 705688: The ratio of Anne's height :
Ben's height is 7 : 9.
Anne's height is 1.4 metres.
Find Ben's height.
Click here to see answer by geetha_rama(94)

Question 705687: The ratio of Anne's height is 7 : 9.
Anne's height is 1.4 metres.
Find Ben's height.
Thanking you in advance.
Click here to see answer by filboi(35)

Question 706263: there are 18 boys and 12 girls what is the ratio of boys to students in the class?
Click here to see answer by jim_thompson5910(35256)

Question 706857: Answers for these http://www.eudoraschools.org/pages/uploaded_files/Math2%20WS3.5A.pdf please :)
Click here to see answer by MathLover1(20849)

Question 707999: What is 48% of 200 set up proportion then may use a calculator
Click here to see answer by Alan3354(69443)

Question 708182: Respected Sir,
My Question is:
A man travels from Agra to Gwalior at a speed
of 30kmph and returns at a speed of 60kmph.
What is his average speed?
Thank you
Click here to see answer by Alan3354(69443)

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