Questions on Word Problems: Money, Business and Interest answered by real tutors!

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Question 60638: can you please help me whith this problem
64. Minimizing cost. A company uses the formula C(x) = 0.02x^2 � 3.4x + 150 to model the unit cost in dollars for producing x stabilizer bars. For what number of bars id the unit cost at its minimum? What is the unit cost at level of production?

Click here to see answer by uma(370)

Question 60655: I am having trouble setting these kinds of problems up please show me.
Sally bought three suckers and a bubble gum for $1.75 Jack bought two suckersand four bubble gums for $2.00 what is the cost of each sucker and bubble gum? THANK YOU IF YOU CAN EXLPAIN THIS WHERE ICAN UNDERSTAND IT.
Click here to see answer by uma(370)

Question 60585: The total profit (in dollars) for sales of x typewriters is given by P(x)=(-0.2^2 + 300x - 200. What is the profit if 500 are sold, and for what value of x will the profit by maximum?
Click here to see answer by checkley71(8403)

Question 60948: I seem to have trouble when I am setting up for two unknowns. Can anyone help?
Six cans of soda and two candy bars cost $5.12. At the same prices, 8 cans of soda and 5 candy bars cost $9.86. Find the price per can of soda and price per candy bar.
Thanks for your efforts.
Click here to see answer by checkley71(8403)

Question 61101: Anna has 12 bills some $5.00 and 10.00 the total value is $100.00 how many of each bill does Anna have?
Click here to see answer by tutorcecilia(2152)

Question 61267: Boomtown's population of 350,000 increases by 15,000 per year, and Ghostville's population of 200,000 decreases by 10,000 per year. In how many years will Boomtown's population be five times that of Ghostville?
Click here to see answer by joyofmath(189)

Question 61324: I want help solving this problem $5000.00 WAS PUT IN A SAVING ACCOUNT FOR 4 YEARS THE AMOUNT OF INTEREST EARNED WAS $400.00 WHAT IS THE INTEREST RATE?
Click here to see answer by joyofmath(189)

Question 61329: A cash register had 5 times as many quarters as nickels, two fewer dimes than nickels, and 30 pennies. All together, the cash register contains $8.50 in change. How many nickles are in the cash register?
Click here to see answer by ptaylor(2198)

Question 61529: The amount of money that a salesperson makes varies directly as the total amount of sales made. If the salesperson $7,500 for selling a house for $120,000, how much will he or she make if he or she sells a house for $150,000?
Use direct variation to solve problem
Click here to see answer by tutorcecilia(2152)

Question 61544: A Plane flies from Portland, ME to El Paso, TX with an average speed of
303mph. A car drives the same distance and leaves at the same time, averaging
a speed of 50 mph. The plane arrives in El Paso 35.42 hours before the car.
How far is it from Portland to El Paso?
Please Help
E
Click here to see answer by asha(30)

Question 61539: Hi,
Please help:
The party Bank pays four percent simple interet per year on deposits.
Connor was paid $1,104 of interest over a four year period. How much did
he originally deposit. Thanks for your help.
Click here to see answer by tutorcecilia(2152)

Question 61652: Michael wants to receive a total of $760 on his investment. He wants to invest part of his $8,000 in a bond that pays 12% annual interest and the rest in a savings account that pays 8%. How much should he invest at each rate?
Thanks for any help you can provide - I'm stuck!
Click here to see answer by Earlsdon(6294)

Question 61654: you have a part time job.you are paid $7 per hour on weekends.your goal is to earn $80 per week.write an equation that models how many hours you must work at each rate to reach your goal.let x be the number of weekday hours and let y be the number of weekend hours.
Click here to see answer by stanbon(75887)

Question 61765: Employees of a discount appliance store receive an additional 20% off of the lowest price on an item. If an employee purchases a dishwasher during a 15% off sale, how much will he pay if the dishwasher originally cost $450?
Click here to see answer by josmiceli(19441)

Question 61857: After T years, the value of a car purchased for $20,000 is
v=20,000(.75)^T
When will this car be worth $500.00?
Click here to see answer by stanbon(75887)

Question 61857: After T years, the value of a car purchased for $20,000 is
v=20,000(.75)^T
When will this car be worth $500.00?
Click here to see answer by josmiceli(19441)

Question 61917: Please help, I believe I understand the problem but can't get started. Here we go:
The cost C(x) in dollars of producing x calculators is given by C(x)=16,000+120x and the revenue R(x) is R(x)=700x-x^2/50. find the profit P(x)=R(x)-C(x), when 500 calculators are produced and sold.
Click here to see answer by stanbon(75887)

Question 62058: Q1. The new governor of California will make $4000 less than the governor of New York and $9000 more than the governor of Alaska. If the sum of these 3 salaries is $440,000 what is the salary of each governor. Solve.
Q2. In a recent year, the 3 Internet access companies with the most subscribers were Earthink, MSN, and AOL. Earthlink had 700,000 more subscribers than MSN, and AOL had 3,700,000 more than 5 times the subscribers that MSN had. If the total subscribers for these Internet access companies is 32,400,000, find the number of subscribers for each company.
Q3. The number of deaths caused by tornadoes decreased 59.2% from 1950's to the 1990's. There were 579 deaths from tornadoes in the 1990's. Find the number of deaths casued by tornadoes inthe 1950's.
Q4. If a rectangular sign is 12 inches more than twice it's height, find its dimensions if the perimeter of the sign is 312 inches.
Click here to see answer by 303795(602)

Question 62159: i can't figure this one out. Credit card interest. Thanks for your help.
A bank credit card charges interest at the rate of 21% per year, compounded monthly. If a senior in college chares her last tuition bill of $1,500 and intends to pay it in one year, what will she have to pay.
Thanks again.
Click here to see answer by joyofmath(189)

Question 62157: A dreaded word problem. I can't figure this one out.
The Municipal transit serves 150,000 commuters daily when the fair is $1.80.
Market research has determined that every penny decrease in the fare will result in 1,000 new riders. What fare will maxmize revenue?
Any help would be appreciated. Thanks!
Click here to see answer by stanbon(75887)

Question 62158: This is a compound interest question. Thanks for any assistance.
An initial deposit of $1,000 earnes 9% interest, compounded monthly. How much will be in the account in 4.5 years.
Thanks again for your help.
Click here to see answer by venugopalramana(3286)

Question 60947: I can't figure out how to set this one up. Can anyone help me out? Thanks
Jane went on a trip for a week. To rent a car she called two firms. Bob's wanted $35 per day with no mileage fee. The Rent-A-Car wanted $150 per week (7 days) but also wanted $.19 per mile. How many miles would have to be driven before the Rent-A-Car price is more than Bob's price?
Thanks!
Click here to see answer by 303795(602)

Question 62373: I am having trouble with this one on simple interest. I have tried and not been successful in getting this question solved.

The amount A of money on deposit for t years in an account earning simple interest is a linear function of t. Express that function as an equation of A= $272 when t=3 and A=$320 when t=5.
This is the actual question, I hope it has been made clear enough.
Click here to see answer by stanbon(75887)

Question 62550: Please help me solve this word problem.
Find the interest rate that would increase your original $1,000 CD, compounded annually, to $1,210 in two years. The growth formula is MV=P(l+r)². MV is the maturity value of the CD, r is the interest rate, and t is the number of years left to compound.
Click here to see answer by Edwin McCravy(20054)

Question 62672: Please help me with this word problem
A surfboard company has fixed costs of $300 per day. If they produce 20 boards in one day, their total cost is $5,100. Find the cost equation.

Click here to see answer by uma(370)

Question 60402: 64. Minimizing cost. A company uses the formula C(x) = 0.02x^2 � 3.4x + 150 to model the unit cost in dollars for producing x stabilizer bars. For what number of bars id the unit cost at its minimum? What is the unit cost at level of production?
Click here to see answer by 303795(602)

Question 63235: Can you please help with this word problem.
A man goes into a grocery 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 the ball?
Click here to see answer by Cintchr(481)

Question 63234: Can you please help with this word problem.
Joe has a collection of nickels and dimes that is worth $5.65. If the number of dimes were doubled and the number of nickels were increased by 8, the value of the coins would be $10.45. How many dimes does he have?
Click here to see answer by Cintchr(481)

Question 63684: You are working in a store and sell 3 lawn mowers and 3 hedge trimmers for $750. The next day you sell 4 lawn mowers and 5 hedge trimmers for $1050. What is the price of the lawn mower and the hedge trimmer
Click here to see answer by ptaylor(2198)

Question 63778: An inheritance of $900,000 is to be divided among Carl, Amy, and Stan in the following manner: Amy is to receive 3/4 of what Carl gets, while Stan gets 1/2 of what Carl gets. How much does each get?
Click here to see answer by 303795(602)

Question 64041: Please help solve: The shopwise market advertises 12 to 22-pound turkeys for $1.19 per pound. However the turkey is free if a customer spends at least $100 on other groceries. Norm spends $100 on other groceries and gets a free 22-pound turkey. Sara spends $90 on other groceries and buys a 22-pound turkey. What is the positive difference between the amount of money Norm spent and the amount of money Sara spent to get their groceries and turkey? (assume there is no sales tax taken into account in these problems )
Click here to see answer by josmiceli(19441)

Question 64048: Lina Chen invest $24,000, part at 8% and the rest 7.2%. How much did she invest at each rate if her income from the 8% investment is two thirds that of the 7.2% investment?
Click here to see answer by checkley71(8403)

Question 64034: Paul invested $12,000 some at 14% annual interest and the rest at 10%. Last year he earned $1632 in interest. How much money was invested at each rate?
Thanks so much for any help.
Click here to see answer by jai_kos(139)

Question 63886: Mr. Toya had part of his $5000 savings in an account that earned 7% interest and the rest in an account that earned 9% interest. How much did he have in each account if his annual from the total investment was $404.20?
Click here to see answer by stanbon(75887)

Question 63885: In a savings account at Ace Savings, Julie had some money that earned 6.5% interest. She had $400 more than that amount in a savings account at Busby Federal. The amount in Busby's earned 7.5% interest. How much was invested in each account if her income from the two accounts was $130.80?
Click here to see answer by stanbon(75887)

Question 64246: Anna has 12 bills in her wallet, some $5 and some $10. The total value of the bills is $100. How many of each bill does Anna have?
Click here to see answer by stanbon(75887)

Question 64234: Hamburgers cost $2 each and pizzas cost $6 each. If the number of hamburgers was 2 more than twice the number of pizzas, and a total of $84 was spent, how many hamburgers and how many pizzas were purchased?
thank you!
Click here to see answer by 303795(602)

Question 63884: Jim borrowed some money at 13% interest and some money at 16% interest. The amount at 16% was $200 more than twice the amount borrowed at 13%. How much was borrowed at each rate if he had to pay a total of $234.50 annual interest?
Click here to see answer by ankor@dixie-net.com(22740)

Question 64442: money questions get me lost....help!
A 20 year fixed-rate mortgage with an annual interest rate of 8.4% compounded monthly is taken on a $83,000 loan. What is the monthly payment to the nearest cent?
thanks for the help!
Click here to see answer by stanbon(75887)

Question 64488: This is an difficult problem with 2 questions. Can anyone give me a hand?
The average tuition for public colleges inrease exponentially from $1,574 in 1970 to $8133 in 1990.
What is the annual rate of increase in tuition from 1970 to 1990. Give answer to four decimal places.
Using the same percentage, what will be the average tuition, to the nearest dollar in 2005.
Thank you!
Click here to see answer by stanbon(75887)

Question 64505: Jonathan has 136 coins in this collection of dimes and quarters. If the coins have a total value of 528, how many are dimes and how many are quarters?
Click here to see answer by ankor@dixie-net.com(22740)

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