Questions on Word Problems: Linear Equations And Systems Word Problems answered by real tutors!

Tutors Answer Your Questions about Linear Equations And Systems Word Problems (FREE)

Question 638816: A certain number is 11 less than three times the next number. Find the Number.
Click here to see answer by graphmatics(170)

Question 639035: Work problems:
1. Two weather satellites working together, each starting at opposite directions from the North Pole, can take necessary photographs to map the entire earth sky in 20 hours. After they hadworked for 12 hours, the first satellite developed communications problem with its earth controlling base, and the second had to finish the job, requiring 1 day additional load time. How long would it take each satellite alone to do the weather-mapping task?
2.Joshua estimates that he could paint Mrs. De Leon's house in 8 days, David could also do the work in 9 days. How long would it take both of them to finish the job if they worked together?

Motion Problems:
1. A ferry boat cruises between two islands that are 40 kilometers apart. Travelling with a slow ocean current of 10kph when going and againts it when returning, the round trip takes 20 minutes more time running. What is the speed of the ferry boat in still ocoan water? How long did the trip take each way?

That's my assignment. Can you help me answer this? please. I need it tomorrow. Thank You.
Click here to see answer by mananth(12270)

Question 639114: The cost of producing t units is C = 2t^2 + 4t, and the revenue generated from sales is
R = 4t^2 + t. Determine the number of units to be sold in order to generate profit.

Click here to see answer by solver91311(17077)

Question 639043: The ages of A and B are in ration of 7:5, 10 year hence the ratof their ages will be 9:7, find their present ages
Click here to see answer by ankor@dixie-net.com(15746)

Question 639423: A fraction becomes 9/11 , if 2 is added to both thenumerator and denominator . If , 3 is added to both the numerator and denominator it becomes 5/6 . Find the fraction?
Click here to see answer by sachi(463)

Question 639879: 3y+5(y-3)/2=3-y+2/3
Click here to see answer by sachi(463)

Question 639877: george can do a job in 6 hours and john can do the same job in 4 hours. how long will it take to finish the job, if both of them work together?

Click here to see answer by nerdybill(7008)

Question 640035: Suppose you have a budget of 400 dollars for one month. You would like to buy some textbooks and CDs.
The average cost of a book is 55 dollars each and that of a CD is
13 dollars each. Let x denote the number of books you buy and y denote the
number of CDs that you buy. Write the equation of your budget constraint in the form y=mx+b, where m and b are some numbers.

Click here to see answer by solver91311(17077)

Question 640199: a(3x-2b)=c(dx-2)
3xa-2ba = cdx - 2
I don't know where to go from here? Thanks for your help!

Click here to see answer by Alan3354(31529)

Question 640306: Three numbers are so related that the second number is 2 more than the first number and third number is 4 more than the first. Find the numbers if the sum of their squares is 56 more than three times the square of the smallest number.
Click here to see answer by sachi(463)

Question 640302: The sum of three numbers is 138. The second is 5 more than the smallest and the third is 10 more than the smallest. Find the numbers.
Click here to see answer by sachi(463)

Question 640575: HELP Me PLEASE! ASAP. John is selling caps at a craft fair. He sells the blue caps for $6 each and the gold caps for $7 each. He hopes to earn $400 during the fair. Write an equation to represent the total amount John would like to earn.
Click here to see answer by jim_thompson5910(28715)

Question 640615: write an algebraic equation..... this year, your club made twice as much on their annual car wash as they did last year. the total sales for the two years is $384. how much did the club make this year?

Click here to see answer by solver91311(17077)

Question 640828: maggie has a job working in an office for $10 an hour and another job driving a tractor for $12 an hour. one week she works in the office twice as long as she drives the tractor. her total income for that week is $416. how many hours did she spend at each job?
Click here to see answer by htmentor(808)

Question 640946: Ahmed buys a plot of land for Rs 96000.He sells 2/5 of it at loss of 6%.At what gain per cent should he sell the remaining part of the plot to gain 10% on the whole?
Click here to see answer by josmiceli(9817)

Question 640960: 2 towns are 780km apart. 2 super fast trains leave from both the towns at 3pm towards each other at speed of 120km/h and 140km/h. At what time will they pass each other?
Click here to see answer by lwsshak3(6761)

Question 640938: Help me find linear equations word problem
A man gos to the store and buys a grapefruit and a toy ball. A 7% tax is applied to the price of non food items. If the total bill is $5.15, including $0.18 in tax on the toy ball,what are the prices of the grapefruit and toy ball?
Click here to see answer by josmiceli(9817)

Question 641209: Flying with the wind, a bird was able to make 150 km/hr.If the wind was half as strong and the bird flies against it, it could make only 30 km/hr. Find the velocities of the wind and the bird.

Click here to see answer by lwsshak3(6761)

Question 641053: If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take for both of them to paint together? Hi I know the answer , but I dont know how to do it. Please elaborate. Thanks, Nelida.
Click here to see answer by lwsshak3(6761)

Question 641380: Suppose you invested 10,000 dolllars, part at 6% annual interest and the rest on 9% annual interest. If you recieved 684 dollars in interest after one year, how much did you invest at each rate? Due tom. thanks!
Click here to see answer by jim_thompson5910(28715)

Question 641683: I'd really appreciate your help sir/madam.
I have tried solving it many times but I am really confused about the problem.
A woman has a certain amount of money invested. If she had $6000 more invested at a rate 1% lower, she would have the same yearly income from the investment. Furthermore, if she had $4500 less invested at a rate 1% higher, her yearly income from the investment would also be the same. How much does she have invested, and what rate is it invested?
Thanks a lot.
Click here to see answer by KMST(1936)

Question 641835: I need help figuring out an equation for: the width of a rectangular deck is 5 yds more than twice it's length. The perimeter is 76 yds. What are the width and length of the deck
Click here to see answer by DrBeeee(393)

Question 642064: Please help me solve this problem
At a price of $4.50, 200 hats will be sold. If the price is reduced to $3.25, then 500 hats will be sold.
Express the number of hats sold as a linear function of the price per hat.
What I have tried is putting the price and number of hats into pairs, but Im not sure which order they need to be in. If I had to guess I would do (200,4.50) and (500, 3.25) but Im not sure what to do after that.
Thank you.
Click here to see answer by solver91311(17077)

Question 641684: I'd appreciate your help sir/madam.
I also tried my best answering this but I am really confused.
A group of women decided to contribute equal amounts toward obtaining a speaker for a book review. If there were 10 more women, each would have paid $2 less. However, if there were 5 less women, each would have paid $2 more. How many women were in the group and how much was the speaker paid?
Thanks a lot.

Click here to see answer by ankor@dixie-net.com(15746)

Question 642223: calculate the value of A (i) (SinA-1 )( 2cosA-1)=0
Click here to see answer by Alan3354(31529)

Question 642240: The sum of digits of a two digit number is five.If the digit at ten's place is increased by unity,the digit becomes one-eight of the original number.Find the original number.
Click here to see answer by KMST(1936)

Question 642887: When graphing the inequality 3x-2y≥ 0, why can’t we use (0, 0) as a test point/ If we test the point (-4, 2), do we obtain a false statement or true one?
Click here to see answer by MathLover1(6812)

Question 643179: how do you write six more than the quotient of twelve and a number, in a algebraic expressions? i wold REALLLY like to know. Thank You!

Click here to see answer by fcabanski(889)

Question 643237: Troy decided to give away some of his compact disc. he gave one-fourth of his CDs to Todd. Then he gave half of the remaining CDs to Ryan. If he is left with six CDs, how many did he have in the beginning ?
Click here to see answer by stanbon(57967)

Question 643241: When the sum of a number and 5 is divided by 2, the result is 11. What is the number?
Click here to see answer by showe9(33)

Question 643565: Adriana has $15.00 in dimes and quarters.
a. Name 3 ordered pairs (d,q) of dimes and quarters she might have.
b. Do these points lie on the same line?
Click here to see answer by htmentor(808)

Question 643691: Use table to find the indicated compositions
X , -1 0 1 2 3 4
F(x) 3 1 0 -1 =3 -1
G(x) -1 0 2 3 4 5
H(x) 0 -1 0 3 0 4
A) g(h(f(4)0)))

Click here to see answer by solver91311(17077)

Question 643700: Use table to find the indicated compositions
X , -1 0 1 2 3 4
F(x) 3 1 0 -1 =3 -1
G(x) -1 0 2 3 4 5
H(x) 0 -1 0 3 0 4
find: A) g(h(f(4)0)))
Click here to see answer by solver91311(17077)

Question 643766: a new function g(x) is obtained from a given function f(x), where g(x) = 2-f(x). If one starts with a graph of f(x) , describe the transformations needed to obtain a graph of g(x).
Click here to see answer by stanbon(57967)

Question 643781: suppose a garden can be raked by one gardener in 7 hours and by a second in 5 hours. how long would it take if they worked together?
Click here to see answer by stanbon(57967)

Question 643820: what is the name 10,452 in words
Click here to see answer by MathLover1(6812)

Question 643830: two times the sum of four and a number x is 16. find the number
Click here to see answer by MathLover1(6812)

Question 644061: size of an envelope It is determined that for a particular campaign it can use any envelope with a fixed width of 3 and 1/2In and a are of at least 17and1/2 in.Determine (in terms of an inequality)those lengths that wil satisfy the company constraints.
Click here to see answer by stanbon(57967)

Question 644345: I need help to translate into algebraic exprations the following
the sum of three times a number and one is five less than twice the number.

Click here to see answer by jim_thompson5910(28715)

Question 644432: A direct flight on delta air lines from atlanta to paris is 4000 miles and takes approximately 8 hours going east(atlanta to paris) and 10 hours going west(paris to atlanta). although the plane averages the same airspeed, there is a headwind while traveling east, resulting in a different air speeds. What is the average air speed of the plane and what is the average wind speed?
Click here to see answer by Alan3354(31529)

Question 644439: A large plywood box has a volume of 240 ft^3. Its length is 16 ft greater than its height, and its width is 1 ft less than its height. What are the dimensions of the box?
Click here to see answer by ptaylor(2052)

Question 644551: -4/(x+4)=-3/(x+6)
Click here to see answer by jim_thompson5910(28715)

Question 644551: -4/(x+4)=-3/(x+6)
Click here to see answer by tools(3)

Question 644553: -4/(2x+3)+1/(x-1)=1/(2x+3)(x-1)
Click here to see answer by MathLover1(6812)

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, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920