Questions on Word Problems: Miscellaneous Word Problems answered by real tutors!

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Question 156487: You are starting a T-shirt business. your fixed costs are $5,000. It costs $11 to buy each shirt. You plan to sell the shirts for $16 each. Write the total cost function, revenue function, profit function. Find the break even point.
Click here to see answer by checkley77(12844)

Question 156478: You are starting a T-shirt business. Your fixed costs are $5,000. It costs $11 to buy each shirt. you plan to sell the shirts for $16. Write the total cost function, revenue function, profit function. Find the break even point.
Click here to see answer by solver91311(24713)

Question 156476: Ted put $4,000 in his savings account at Bank A. He put $ 6,000 in an account at Bank B that paid interest at twice the rate as Bank A. His total simple interest for the year was $640. What was the interest rate at each bank?
Click here to see answer by gonzo(654)

Question 156622: A long distance foot race known as a marathon covers a course of about 26.2mi. In 1984, the first time women competed in the marathon in the Olympic Games, the �race was won by Joan Benoit of the US. At one point, she was three x as far from the end of the course as she was from the starting point. How many miles had she run at that time?
Click here to see answer by ankor@dixie-net.com(22740)

Question 156643: for the following function, c computes a value, where if you add millions of dollars to the value, the result is the cost of implementing a city recycling project when x, as a perentage(not its decimal equivalent) citizens participate. C(x)= 1.5x/100-x
a. Using this model, determine the cost if 60% of the citizen's participate.
b. Using this model, find the percentage of participation that can be expected if $5 million is spent on this recycling project? Set up an equation and solve algebraically. Round to the nearest whole percent.
Click here to see answer by stanbon(75887)

Question 156223: Please help me solve this problem::
A piece of ribbon is 60 centimeters long and cut into three different pieces. One piece is 2 centimeters longer than the shortest piece and 2 centimeters shorter than the longest piece. Whats the length of each piece?
Click here to see answer by jojo14344(1513)

Question 156616: Suppose Charlie O�Brian hits a baseball straight upward at 150ft/sec from a height of 5 ft.
Click here to see answer by stanbon(75887)

Question 156253: This is an Extra Credit problem, NOT from a textbook.
A power company is going to locate it's new power plant along a road connecting the towns of Exton and Whyton which are 10 miles apart. For political reasons, the power company will buy coal from both towns. The price of coal per ton from Exton is $26.65 plus $.45 per mile for delivery. The price per ton from Whyton is $26.25 plus $.25 per mile for delivery. How far from Exton should the plant be located if the price of coal per ton delivered from Exton is to be equal to that from Whyton?
If you could, I need to have this answer by this coming Monday. Thank you so much!
Click here to see answer by ankor@dixie-net.com(22740)

Question 156250: I have been working on this problem and I have tried it many times and I still can't figure it out. I was wondering if someone could help me? I would deeply appreciate it! Please and Thank You!!!
A subway train makes six stops of equal length during its 21 km run. The train is actually moving for 20 min of the trip. At most how long can the train remain at each station if the average speed for the trip, including stops, is to be at least 36 km/h?
Click here to see answer by ankor@dixie-net.com(22740)

Question 156788: Find a number such that one-half of the number is 3 less than two-thirds of the number
Click here to see answer by phd(3)

Question 156875: If a ball is tossed in the air from a height of 6 feet with a velocity pf 32 feet per second, then its altitude at time t(seconds) can be described by the function A(t) = -16t2 + 32r + 6. Find the altitude of the ball at 2 seconds.
Click here to see answer by Earlsdon(6294)

Question 154966: There is 123456789. You have 9 boxes (grids) you have to add the top with middle and get the answer at the bottom. You can only use one number only once
Click here to see answer by Edwin McCravy(20054)

Question 156868: 4. A customer wants to make a teepee in his backyard for his children. He plans to use lengths of PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8 feet tall . How long should the pieces of PVC plumbing pipe be?

Click here to see answer by Earlsdon(6294)

Question 156891: the equation y=3.35x + 3.73
can be used to estimate the number y of digital cameras sold, in millions, x years after 2000. that is, x=0 corresponds to 2000,x=5 corresponds to 2005, and so on. i think i got a correct but b is complicated.
a) estimate the number of digital cameras sold in 2002 and in 2007
y=3.35(2)+3.73=7.43
y=3.35(7)+3.73=27.18
b) in what year were about 20.5 million digital cameras sold?

Click here to see answer by gonzo(654)

Question 156992: I need a demand equation for the following: Suppose that a market research company finds that at a price of p=$20, they would sell x=42 tiles each month. If they lower the price to p=$10, and they can expect to sell x=52 tiles in a months time. Find the equation of the line for the demand equation. Write your answer in the form p=mx+b.(Hint: Write an equation using two points in the form (x,p)
Click here to see answer by gonzo(654)

Question 157168: What does it mean to refer to a 20 inch TV set or a 25 inch TV set? Such units refer to the diagonal of the screen. A 30 inch TV set also has a width of 24 inches. What is it's height?
Click here to see answer by josmiceli(19441)

Question 157180: Heidi ran 14 times as far after ahe got her second wind. If she ran three thousand and seven hundred eighty-seven millionths feet on her wind, how far did she run in all?
Click here to see answer by checkley77(12844)

Question 157197: Delia has 115 books. If she has 4 times as many mystery books as science books, how many mystery books does she have?
Click here to see answer by checkley77(12844)

Question 157233: If you have a bad grass fire with wind that is burning at the rate of .04 acres per second how many acres will burn in 48 hours? (assuming the rate will not change the entire time)

Click here to see answer by checkley77(12844)

Question 157230: If you have a bad grass fire with wind that is burning at the rate of .04 acres per second how many acres will burn in 48 hours? (assuming the rate will not change the entire time)

Click here to see answer by checkley77(12844)

Question 157227: An amimal requires 743 g of protein and 24g of calcium daily. How many pounds of protein would be required? How many pounds of calcium would be required?
Click here to see answer by nerdybill(7384)

Question 157226: A person took around 40 acetaminophen tablets a few minutes ago. If you know that 2 tablets contain 160 milligrams how many miligrams were swallowed?
Click here to see answer by nerdybill(7384)

Question 157218: assume it took around 40 carpenters to build a shed in 20 days. Assuming the carpenters work at the same rate, how long would it take six carpenters to build a shed?
Click here to see answer by checkley77(12844)

Question 157231: If you have a bad grass fire with wind that is burning at the rate of .04 acres per second how many acres will burn in 48 hours? (assuming the rate will not change the entire time)

Click here to see answer by Alan3354(69443)

Question 157232: If you have a bad grass fire with wind that is burning at the rate of .04 acres per second how many acres will burn in 48 hours? (assuming the rate will not change the entire time)

Click here to see answer by ptaylor(2198)

Question 157277: please help with this word problem

How many gallons of a 5% salt solution must be mixed with 60 gallons of a 9% solution to obtain a 7 % solution?

paint costing $ 18 per gallon is to be mixed with $ 4-per gallon thinner to make 14 gallons of a paint that can be sold for $12 per gallon. How much paint thinner should be used?
Click here to see answer by checkley77(12844)

Question 157341: Sara can walk the length of the sidewalk in 8 minutes if it is not moving. If she stands on the sidewalk as it moves, she can travel the length in 6 minutes. If Sara walks on the sidewalk as it moves,how many minutes will it takes her to travel the same distance? Assume she always at the same rate, and express the answer as a decimal.
Could you please explain this , please?
Click here to see answer by josmiceli(19441)

Question 157424: a certain investment fund multiplies the value of an investment by 4 every year. Thus, after n years, the value of the investment is multiplied by 4^n. how many years will it take for the value of the investment to be multiplied by 256?
Click here to see answer by gonzo(654)

Question 157483: Determine whether the graphs of the equations are parallel lines, perpendicular lines, or neither.
3x-8y= -18
32x+12y= -18

Click here to see answer by Fombitz(32388)

Question 157486: i need help with this problem:
Solve the problem: Express the answer in scientific notation to two decimals unless requested otherwise.
A company produced 2,600,000 small appliances in one year and made a profit of $6,690,000. What was the profit on each appliance?
Click here to see answer by gonzo(654)

Question 157482: I need help with this problem:
Solve the problem
A salesperson has two job offers. Company A offers a weekly salary of $200 plus commission of 10% of sales. Company B offers a weekly salary of $400 plus commission of 5% of sales. What is the amount of sales above which Company A's offer is the same as Company B's?
The answers to choose from are
$4000
$4100
$8000
$2000
Click here to see answer by gonzo(654)

Question 157527: A robin is flying south for the winter at a rate of 40 mph when it runs into a hurricane, blowing due west at 100 mph. What is the new velocity of the robin?
Click here to see answer by Alan3354(69443)

Question 157519: I need help with this problem
Solve the problem: Nikki is fishing from a bank 29 feet above water level. In this location, the fish tend to feed at 42 feet below the surface. How long must Nikki's fish line be to reach the fish?
Click here to see answer by Alan3354(69443)

Question 157530: Scott, when driving his car, collides with a telephone pole. Because he decided to wear his seat belt, he stops with the car after moving a distance of 3 ft (0.914 m) during the collision. If the collision takes 0.2 sec, what is the average velocity of the car during the collision?
Click here to see answer by Alan3354(69443)

Question 157529: With a force of 15 N, a person is pushing a 30 kg crate over a horizontal surface. Suppose the crate is moving at a constant velocity.
a. What is the force of friction?

b. What is the acceleration of the crate?

c. Suppose the person lets go of the crate. What is the new acceleration that initially occurs right after the crate is let go?
Click here to see answer by Fombitz(32388)

Question 157520: I need help
Solve: Brand X copier adverises that its copiers run 16% longer between service calls than its competitor. If Brand X copiers run 38,300 copies between service calls, how many copies would the competitior run (to the nearest copy)
Click here to see answer by checkley77(12844)

Question 157665: the population of glenbrook is 375000 and is increasing at the rae of 2.25% per year. predict when the population will be 1 million.
i neeed help. please answer this....
Click here to see answer by jojo14344(1513)

Question 157664: A boat weighs 1500lbs more then its motor and 1900lbs more then its trailer. Together the boat and motor weigh five times as much as the trailer. How much does the boat weigh?
Click here to see answer by nerdybill(7384)

Question 157702: Example: P=P0[1+r]^t

what is:
in 2009 is p1=60,943,912[1+0.9934]^(1)
in 2010 is p2=60943,912[1+0.9934]^2
I need the same answer for 2011 and 2012 please explain and show me how to figure this our.
Click here to see answer by jim_thompson5910(35256)

Question 157738: Darren is floating in space. His mass with his life support system is 240 kg. He wants to return to his ship so he throws with a force of 10 N his tool kit that has a mass of 2 kg. What is the acceleration of the tool kit while Darren is throwing it? What is the force on Darren and what is his acceleration while throwing the tool kit?
Click here to see answer by Fombitz(32388)

Question 157845: Bessy has 6 times as much money as Bob, but when each earns $6, Bessy will have 3 times as much money as Bob.
How much doe each have before and after earning the $6?
Click here to see answer by midwood_trail(310)

Question 157884: pump A working together with pump B can drain a tank of water in 5 hours.
pump A working alone can drain the tank in T hours.
pump B working alone can drain the pump in (T-4) hours.
how long does it take for pump A to drain the tank by itself?
how long does it take for pump B to drain the tank by itself?

Click here to see answer by jojo14344(1513)

Question 157913: Kevin ran 4 miles more than Steve ran. The sum of their distance is 26 miles.
How far did Steve run? The domain of the solution is {0, 4, 22, 11}.
Click here to see answer by nomad_55(6)

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