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Tutors Answer Your Questions about Percentage-and-ratio-word-problems (FREE)
Question 65483: Fungicides account for 1/10 of the perticides used in the United States. Insecticides account for 1/4 of all the pesticides in the United States. The ratio of fungicides to insecticides used in the United States can be written 1/10 / 1/4. Write this ratio in simplest form.
1/10 / 1/4
First we flip the last problem:
1/10 / 4/1
We then cross out the 10 and 4 by dividing 2 in to it leaving us with:
1/5 / 2/1
From here I am not sure where to go unless I have already messed up. Hope you can help me out. Thanks a bunch
Click here to see answer by stanbon(57361)  |
Question 65555: first off i'd like to state that i've never taken algebra and am going back to school for the first time since 1976,, so please don't laugh i do know a lil about the construction stuff done it for 24 years it's the fraction stuff that gets me
a floor is 12'6" in width and 10'4" in length,new tiles of 5" on each side,
express the area of the kitchen floor in sq.ft. as an improper fraction.
express the area of each tile in sq ft.
how many tiles required to tile the floor
Click here to see answer by 303795(595) |
Question 56262: For problems 19 & 20 write and solve an equation to answer the question.
19). Turner field in Atlanta has 49,381 seats. Jacobs field in Cleveland has 43,368 how many seats would need to be added to Jacobs field for it to have as many seats as Turner field?
20). Jackie Joyner-Kersee won a gold medal in the olimpic hepthalon 1988 and in 1992. her 1992 score was 7044 point. This was 247 fewer pointsthen her 1988 score. What was her 1988 score?
Click here to see answer by 303795(595) |
Question 52886: In 1990, 28% of babies in the United States were boren to parents who were not married. Throughout the 1990s, this increased by approx. 0.6% per year. If this trend continues in which year will 37% of babies be born out of wedlock?
thanks.
Click here to see answer by 303795(595) |
Question 48624: 1) Sarah bought a loaf of bread for $1.69 and a gallon of milk for $2.29. Using a tax rate of 5%, she correctly figured that the tax on the bread would be 8 cents and the tax on the milk would be 11 cents, for a total of $4.17. However at the cash register she was correctly charged $4.18
How could this happen? Which property of the real number is in question in this case? (Section 1.7)
Click here to see answer by 303795(595) |
Question 47211: A swimming pool holds 600,000 liters of water. The pool has two drainage pipes. When the pool is completely full, the first pipe alone can empty it in 200 minutes, and the second pipe alone can empty it in 120 minutes. When both pipes are draining together, how long does it take them to empty the pool?
Click here to see answer by 303795(595) |
Question 65831: What was the percentage increase in motor vehicle production in countries outside the United States from 1950 to 1997?
Year United States Canada Europe Japan Other World Total
1997 - 12,119 - 2,571 - 17,773 - 10,975 - 10,024 - 53,463
1996 - 11,799 - 2,397 - 17,550 - 10,346 - 9,241 - 51,332
1995 - 11,985 - 2,408 - 17,045 - 10,196 - 8,349 - 49,983
1994 - 12,263 - 2,321- 16,195 - 10,554- 8,167- 49,500
1993 - 10,898 - 2,246- 15,208- 11,228 - 7,205 - 46,785
1992 - 9,729 - 1,961 - 17,628 - 12,499 - 6,269- 48,088
1991 - 8,811 - 1,888 - 17,804- 13,245- 5,180- 46,928
1990 - 9,783 - 1,928- 18,866- 13,487- 4,496 - 48,554
1985 - 11,653- 1,933- 16,113- 12,271- 2,939 - 44,909
1980 - 8,010- 1,324- 15,496- 11,043 - 2,692- 38,565
1970 - 8,284 - 1,160 - 13,049 - 5,289- 1,637 - 29,419
1960- 7,905 - 398- 6,837- 482 - 866- 16,488
1950 - 8,006 - 388- 1,991- 32- 160- 10,577
(The dashes are so you can distinquish which number go in which colum becuase I could not get it to display correctly).
_______________________________________________________________________________
8)Between 1950 and 1997, did the production of motor vehicles increase by a greater percentage in Canada and Europe?
Any help with these two problems would be greatly appreciated. Please show me how you did this so I can understand how to do this. Thanks.
Click here to see answer by Cintchr(481) |
Question 66404: The Brown's want to purchase a house that costs $130,000. They plan to take out a $90,000. mortgage and put $40,000 as a down payment. The bank informs them with a 20-year mortgage their monthly cost would be $752.40 and with a 30-year mortgage their monthly cost would be $660.60. Determine the amount they would save on the cast of the house if they selected the 20-year mortgage rather than the 30-year mortgage.
Click here to see answer by rcmcc(152)  |
Question 66599: a 10 inch by 12 inch picture is to be enlarged and painted on a 15 foot by 10 foot wall. If the picture remains proportional(not distorted) and maintain the same orientation(not rotated), what is the great fraction of the wall could be covered by the painting? express your answer as a fraction. Explain
Click here to see answer by checkley71(8403) |
Question 66762: kindly show me the answer and solution to this problem.....divide 56 into two parts. If the larger number exceeds twice the smaller number by 5, find the numbers....i hope that you can show me the step-by-step solution and the answer
Click here to see answer by venugopalramana(3286) |
Question 66765: Alpha Band charges $600 to play for the evening. Band Bodacious charges $350 plus $1.25 for each ticket.
Write a linear equation for the cost of each band. Graph each equation on the same coordinate plane and find the number of tickets for which the cost of the two bands will be equal.
Click here to see answer by stanbon(57361) |
Question 66766: A caterer charges a fixed cost for preparing dinner plus a cost for each person served. You know that the cost for 100 people will be $750 and the cost for 150 people will be $1050. Find the caterer's fixed cost and cost per person served.
Click here to see answer by ptaylor(2048)  |
Question 66945: If 70 precent of refrigerators in the United States contain n.l.r.m.i.t.( no longer recognizable moldy icky things), and 7 out of 8 of these contain more than one n.l.r.m.i.t. what percent of refrigerators contain more than one n.l.r.m.i.t.?
Click here to see answer by stanbon(57361) |
Question 67029: by lowering the temprature of their electric hot water heater from 140 degrees F. to 120 degrees F., the Kelly's average electric bill dropped 7% to $60.45. What was their electric bill before they lowered the temprature of their hot water?
thanks!!!
Click here to see answer by stanbon(57361) |
Question 67268: A fruit salad is made up of cantaloupe, strawberries, and bananas. If a salad weighing 135 oz. contains 3oz. of bananas for every oz. of strawberries and has the same number of cantaloupe as strawberries, how many oz. of banana are in the salad?
Click here to see answer by ptaylor(2048) |
Question 67436: Smart Cards have been growing in popularity in recent years. In 2006, 500 million Smart Cards are expected to be issued. This represents a 117% increase from the number of cards that were issued in 2001. How many Smart Cards were issued in 2001? Round to the nearest million.
I set it up as 1.17 · x + x = 500
multiplied all by 100 117 · 200x = 50000
subtracted 117 from both sides 200x = 49883
divided both sides by 200 x = 249.415
The books answer is 230 mil.
Click here to see answer by joyofmath(189) |
Question 67436: Smart Cards have been growing in popularity in recent years. In 2006, 500 million Smart Cards are expected to be issued. This represents a 117% increase from the number of cards that were issued in 2001. How many Smart Cards were issued in 2001? Round to the nearest million.
I set it up as 1.17 · x + x = 500
multiplied all by 100 117 · 200x = 50000
subtracted 117 from both sides 200x = 49883
divided both sides by 200 x = 249.415
The books answer is 230 mil.
Click here to see answer by Earlsdon(6287) |
Question 67443: The ACT Assessment is a college entrance exam taken by about 60% of college-bound students. The national average score was 20.7 in 1993 and rose to 21.0 in 2001. Find the percent increase. (Round to the nearest hundredth of a percent.)
I'm so stumped here. I've tried so many things that i'm completely blank as how to set this up. My last attempt was : 60% · 20.7 & 60% · 21.0
I then multiplied all by 100 : 6000 · 2070 & 6000 · 2100
I show a difference of : 8070 - 8100 = 30
Click here to see answer by stanbon(57361) |
Question 67683: Lorijayne smiled, for she had purchased C cats for only D dollars. Then she frowned, for she still had to purchase P parrots and each parrot cost (7/4) of the cost of 1 cat. How much did she pay for her parrots?
Click here to see answer by ptaylor(2048) |
Question 68609: I am in a problem seminar class and have been asked to answer and prove the following:
Two containers, A and B , contain different liquids called a and b correspondingly of equal volume. Suppose that one teaspoon of liquid a is poured into container B and then thoroughly mixed. Next suppose that one teaspoon of the uniform mixture in B is poured into container A. Which of the two containers (if any) is more contaminated?
I have tried many different things and I always end up showing that the volumes will then be equal not what the contamination of each is.
Can some one please HELP!!!!!!!
Click here to see answer by josmiceli(9686)  |
Question 68725: the school cafeteria surveyed the student body and discovered that 13/15 of the students listed pizza as their favorite lunch. There was a total of 78 students that liked pizza best. how many students were in the student body?
Click here to see answer by rmromero(383) |
Question 68751: The following represents the way a new company ships its goods.
Second day air freight - 40%
Truck - 45%
Next Day Air Freight - 15%
If the company shipped a total of 550 items last month, how many were shipped using second-day air freight?
Click here to see answer by stanbon(57361) |
Question 69440: pepperidge farm light style 7 grain bread has140 calories in a 3-slice serving. this is 15% less than the number of calories in a serving of regular bread. how many calories are in a serving of regular bread?
Click here to see answer by stanbon(57361) |
Question 69696: Social Science: In 1975 the population of the Earth was approximately 4 billion and doubling every 35 years. The formula for the population P in year Y for this doubling rate is:
P(in millions)= 250 x 2 ^(y-1990/66)
:
If there are 6 x 10^9 people on the Earth and there is enough freshwater to provide each person with 8.79 x 10^5 L, how much freshwater is on the Earth?
:
Thanks for any help you can provide it is appreciated.
Click here to see answer by Earlsdon(6287) |
Question 69889: American Products plans to lay off 10% of its employees in its aerospace division and 15% of its employees in its agricultural division. If altogether 12% of the 3000 employees in these two divisions will be laid off, then how many employees are in each division?
Click here to see answer by ankor@dixie-net.com(15656)  |
Question 70029: Every basketball season Phill competes in a free throw contest. This year Phill was successful at .75 of his free throws. If he succeeded at 12 of his free throws did he attempt?
Thank you!
Click here to see answer by bucky(2189) |
Question 70041: The U.S. population in 1990 was approximately 250 million, and the average growth rate for the past 30 years gives a doubling time of 66 years. The above formula for the United States then becomes
P (in millions) = 250 x 2^(y-1990/66)
:
What will the population of the United States be in 2025 if this growth rate continues?
Click here to see answer by stanbon(57361) |
Question 70041: The U.S. population in 1990 was approximately 250 million, and the average growth rate for the past 30 years gives a doubling time of 66 years. The above formula for the United States then becomes
P (in millions) = 250 x 2^(y-1990/66)
:
What will the population of the United States be in 2025 if this growth rate continues?
Click here to see answer by ankor@dixie-net.com(15656) |
Question 70382: Employees use two methods to refinidh a chair. Method I takes 1 hour and cost $3. Method II takes 1 1/2 hour and cost $1.50. Last week, they took 36 hours and spen t $60. How many did they refinish with each method?
Click here to see answer by stanbon(57361) |
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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
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