Questions on Algebra: Proportions answered by real tutors!

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Question 316182: A recipe calls for punch that serves 4 people calls for 1 and 1/2 teaspoons of sugar. If 3 teaspoons equals 1 tablespoon, how many tablespoons will be needed to make enough punch for 18 people?
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Question 316574: If the ratio of boys to girls on a committee is 3:7 what percent of the committee are boys?
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Question 316532: A Spanish class has 18 boys and 22 girls. boys are what fraction of the class?
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Question 316796: 1.0000eur is equivalent to 0.7615 u.s. dollars. use a proportion to convert $2500 to euro
3282.994090610636901 euros

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Question 317013: The school cafeteria has found that they go through 9 sandwiches for every 7 tickets they sell to the students. Today they have 546 tickets for sale. How many sandwiches do they need to make?

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Question 317039: difference between -4 and
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Question 317331: 4x=12/15

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Question 317783: If 5 tractors can plow a field in 4 hours,how many hours will it take 3 tractors to plow a field?
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Question 318631: the actual distance is 75 feet. Find the distance on a scale drawing if the scale is 1 in :25 feet
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Question 319261: The intensity of a light source varies inversely as the square of the distance from the source. If the distance from a source increases by 25%, by what percent does the intensity decrease?
Click here to see answer by devjyotsingh24(4)

Question 319761: The ratio of sweetened lemon juice to water in lemonade is 2:7. How much lemonade
can you make if you use 5 cups of sweetened lemon juice?
Click here to see answer by josmiceli(19441)

Question 321113: Question 1: A tree casts a shadow that is about 10 ft. long. Javier, who is about 5 ft. tall, is standing near the tree. Javier's shadow is about 4 ft. long. What is the estimaated height, t, of the tree? Question #2: One gallon of paint will cover 400 square feet. How many gallons of paint are needed to cover a wall that is 8 feet high and 100 feet long? Question #3: A wedding cake has a diameter of 12 inches. The cake decorator needs to know how many strawberries he will need to put around the outside, so he needs the circumference. What is the circumference? Leave the answer in terms of pi. Question #4:The speed of an elevator varies inversely withthe weight it carries. If the elevator rises at 10 feet per second when it carries 400 lbs, how fast will it rise when it carries 500 lbs.
Click here to see answer by mananth(16946)

Question 323506: if 20 pounds of fertilizer will cover 1500 square feet of lawn, how many pounds of fertilizer are needed for 4275 square feet of lawn?
Click here to see answer by rfer(16322)

Question 323474: show me how to write and solve this word problem. 14 is what percent of 24

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Question 324261: 1 number is twice another number, if the sum of their reciprocal is 1/4 find the 2 numbers
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Question 324261: 1 number is twice another number, if the sum of their reciprocal is 1/4 find the 2 numbers
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Question 324466: 26% of 250 is what??? im confused on how to set it up percent * base = amount...then theres another way to work it out...im lostttttt. ty for your help
Click here to see answer by Fombitz(32388)

Question 325317: A card is selected from a standard deck of 52 playing cards. Find the probability of selecting
1. a five given the card is a not a club.
2. a heart given the card is red.
3. a face card, given that the card is black. (An ace is not a face card.)
Show step by step work. Give all solutions exactly in reduced fraction form.
Click here to see answer by Edwin McCravy(20060)

Question 325405: what is p-378
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Question 325680: On a house plan on which 2 inches represents 5 feet, the length of a room measures 7 1/2 inches. The actual length of the room is. I know how to set the problem up but don't know the next step. 2 inches/7 1/2 inches = 5/x I know to cross multiply what next Please help.
Click here to see answer by rfer(16322)

Question 326563: cost varies directly as time.Thecost is $8.00 when the time is 2 hours. What is the constant of proportionality?
Click here to see answer by user_dude2008(1862)

Question 326571: 1.Which of the following statements are true about the function y =3x? I The function is a direct variation.II The function goes through the orgin.III. The constant of variation is 1/3.IV. y is 6 when x is 2.
Click here to see answer by user_dude2008(1862)

Question 326593: 1.Which portion could be used to solve for the height of the tree? a.6/h=10/30,b.6/10=h/30,c.6/10=40/h,d.6/h=10/40
Click here to see answer by user_dude2008(1862)

Question 326589: 1What is 1/2% of 50
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Question 326595: 1.A skateboard was reduced in price from &50 to $43.What was the precent decrease?
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Question 326616: a car travels at 20 meters per second what is its rate in kilometers per hours
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Question 326663: if on a scale drawing 5 inches represents 80 feet then 3/4 inch would represent how many feet?
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Question 326658: do a direct variation always goes through the origin of the coordinate plane?
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Question 326752: convert 18 quarts to gallons.
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Question 326757: what is 1.2% of 50?
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Question 326753: sam wants to leave an 18% tip for dinner.the bill is for $23.50. what equation can be used to find the total amount that sam should pay?
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Question 326622: A Direct variation always goes goes through the origin of the coordinate plane
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Question 326651: (9)/(x^2+7x+10)=(5)/(x+2)-(3)/(x+5) ...is it no solution or is there an answer? thanks
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Question 326775: The Door On A Model Building Is 2 Inches Tall.The Door On The Actual Buliding Is 8 Feet Tall.What Was The Scale used

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Question 326784: which of the foloowing is a proportion? a.2/5=4/25,b.4/6=6/9,c.4/3=6/8,d.5/6=10/18
Click here to see answer by JBarnum(2146)

Question 326662: solve the provided proportion
(-2)/(x-2)=(x-3)/(8x+11)
Click here to see answer by Fombitz(32388)

Question 326649: solve the provided proportion
(-2)/(x-2)=(x-3)/(8x+11)
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Question 327061: what is 16%of70?
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Question 327078: what is 16%of70?
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Question 327115: If I want to finish a 16 kilometer race in 2 hours what is the minium distance in kilometers that I should run every 15 minutes

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Question 327857: Tickets to a local movie Were sold at $6 for adults and $4.50 for students. if 270 tickets were sold for a total of $1395. how many tickets were sold of each kind?
Click here to see answer by meay7c(10)

Question 328348: On a map 2.5 inches represents 30 miles. On the map it is 8 inches from Atown to Bville. How many miles apart are the two towns?
a.9.6 miles b.96 miles c.144 miles d.240 miles e.120 miles

Click here to see answer by mananth(16946)

Question 328804: If on a scale drawing 5 inches represents 80 feet then 3/4 inch would represent how many feet?
I tried to divide 5 int 80 and it came out 6.66ongoing and i figured out that that was not right so i thought i would try and divide 80 into 3/4 but im not really shurr how to go about doing this question.
Click here to see answer by scott8148(6628)

Question 329299: 1/2=5/10
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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