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Posts Tagged ‘math’

12.
audra and tom r working in the school kitchen on soup day. their job is to make 8 liters of chicken noodle soup in a large pot. they have only small cans (0.284 liters) of soup. they will add 1 can of water for each can of soup.

a.) how many small cans of soup are needed to make 8 liters?

b.) how many students could be served if each student received 0.190 liters of the soup?

c.)small cans of soup each cost $0.97. the school sells soup at $1.00 a bowl. what is the profit on the 8 liters of soup?

d.)what assumpitions do u need to make to answer part c.)?

e.)what other costs might be involved in the sale of soup?

okkkk that took me awhile… this is only grade 7 math, but i can’t figure it out. i’m not asking u to answer it, but u can if u want, maybe if u get it (i don’t) maybe u could just tell be how to find teh answer…

thanks

btw this is a canadian textbook so all units of measurements r canadian, same goes for the prices, they r all in canadian dollars. if that matters…

You need to purchase a textbook for nursing school. The book cost $80.00, and the sales tax where you are purchasing the book is 8.25%. You have $100. How much change will you receive back?

A. $5.20
B. $7.35
C. $13.40
D. $19.95
E. $21.25

2nd one—

You purchase a car making a down payment of $3,000 and 6 monthly payments of $225. How much have you paid so far for the car?

A. $3225
B. $4350
C. $5375
D. $6550
E. $6398

1. Lee worked 22 hours this week and made $132. if she works 15 hours next week at the same pay rate, how much will she make?

2. you need to purchase a textbook for nursing school. the book cost $80.00 and the sales tax where you are purchasing is 8.25%. you have $100. how much change will you receive back?

3. the last week of a month a car delearship sold 12 cars. a new sales promotion came out the first week of the next month and then sold 19 cars that week. what was the percent increase in sales from the last week of the previous month compared to the first week of the next month?

4. the number of milliliters in 1 liter is?

5. if lynn can type a page in p minutes, what piece of the page can she do in 5 mintues?

You need to purchase a textbook for nursing school. The book cost $80.00, and the sales tax where you are purchasing the book is 8.25%. You have $100. How much change will you receive back?

This problem deals with “Weighted Average”

I figure out how to do the problem alright. I checked the answer in the back of the book to be sure i was right. But i didnt know how in the world i got the answer in the first place.

The question ask me to find the weighted average of average weight of bolling balls.

Weights(lb)
The classes are: 6-8, 10-12, 13-15, 16-17
And the sales percentages are: 15%, 39%, 27%, 19%

Now how do i calculate the weighted average of the bolling balls?

I used the medians of each class and multiply it by the percentages respectively. And i add and divided, and i got for my answer: 12.255 or 12.26 (lbs)

Now, here’s my other question, Why did i use the median of those 4 classes to find the weighted average?…

Somehow i couldnt find the reason why in my *textbook*…So please help me understand why…

Thank you!

!!!PLEASE help me figure out how to solve these problems!!!
Anyone who can help me with most of these problems will be chosen as the best.

3. 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?
4. The sales price of a car is $12,590, which is 20% off the original price. What is the original price?
5. Solve the following equation for A : 2A/3 = 8 + 4A
6. If Leah is 6 years older than her sister, Sue, and John is 5 years older than Leah, and the total of their ages is 41. Then how old is Sue?
7. Alfred wants to invest $4,000 at 6% simple interest rate for 5 years. How much interest will he receive?
8. Jim is able to sell a hand-carved statue for $670 which was a 35% profit over his cost. How much did the statue originally cost him?
9. The city council has decided to add a 0.3% tax on motel and hotel rooms. If a traveler spends the night in a motel room that costs $55 before taxes, how much will the city receive in taxes from him?
10. A student receives his grade report from a local community college, but the GPA is smudged. He took the following classes: a 2 hour credit art, a 3 hour credit history, a 4 hour credit science course, a 3 hour credit mathematics course, and a 1 hour science lab. He received a “B” in the art class, an “A” in the history class, a “C” in the science class, a “B” in the mathematics class, and an “A” in the science lab. What was his GPA if the letter grades are based on a 4 point scale? (A=4, B=3, C=2, D=1, F=0)
11. Simon arrived at work at 8:15 A.M. and left work at 10: 30 P.M. If Simon gets paid by the hour at a rate of $10 and time and ½ for any hours worked over 8 in a day. How much did Simon get paid?
12. Grace has 16 jellybeans in her pocket. She has 8 red ones, 4 green ones, and 4 blue ones. What is the minimum number of jellybeans she must take out of her pocket to ensure that she has one of each color?
13. If r = 5 z then 15 z = 3 y, then r =
14. If 300 jellybeans cost you x dollars. How many jellybeans can you purchase for 50 cents at the same rate?
15. Lee worked 22 hours this week and made $132. If she works 15 hours next week at the same pay rate, how much will she make?
16. If 8x + 5x + 2x + 4x = 114, the 5x + 3 =
17. You need to purchase a textbook for nursing school. The book cost $80.00, and the sales tax where you are purchasing the book is 8.25%. You have $100. How much change will you receive back?
18. You purchase a car making a down payment of $3,000 and 6 monthly payments of $225. How much have you paid so far for the car?
19. Your supervisor instructs you to purchase 240 pens and 6 staplers for the nurse’s station. Pens are purchased in sets of 6 for $2.35 per pack. Staplers are sold in sets of 2 for 12.95. How much will purchasing these products cost?
20. If y = 3, then y3(y3-y)=

!!!i dont want the answers!!!

1. What is 4% of 400?
A. 10
B. 16
C. 100
D. 1600
2. What is 8% of 800?
A. 6.4
B. 64
C. 128
D. 12.8
3. Estimate: 65.8% of what number is 14?
A. 15
B. 21
C. 28
D. 33
4. What is 37.5% of 240?
A. 80
B. 85
C. 89
D. 90
5. What is 2% of 300?
A. 6%
B. 6.6
C. 6
D. 66
6. Find the sales tax. Round to the nearest cent.
Purchase: $70.45
Sales tax Rate: 4%
A. $2.42
B. $2.82
C. $2.80
D. $3.00
7. Tammy earned $900 a month. With her promotion, she received a 11% pay raise. What is her new monthly pay?
A. $999
B. $990
C. $811
D. $911
8. Rita paid $18.90 for a textbook on sale. The regular price was $27.00. What was the discount rate?
A. 3%
B. 3.30%
C. 30%
D. 9%
9. The regular price of a television in a store is $382.52. The Sunday paper has an ad saying that this store is having a sale on this television. The ad says that this television will be sold 11 % less than the regular price. What is the sale price? Give your answer to the nearest one hundredth of a dollar.
A. $340.00
B. $344.00
C. $340.40
D. $340.44
10. Nancy has gross earnings each week of $254.26. If she pays 18% of her check in taxes, how much is her net pay (round to the nearest tenth)?
A. $183.07
B. $20207
C. $88.49
D. $208.50
11. What percent of 130 is 91?
A. 14.28%
B. 1.42%
C. 70 %
D. 7.04%

The daily profit P(in thousands of dollars)from the sale of textbooks is a function of the number of x textbooks sold(in hundreds). The formula for the function is P= -3xsquared + 12x – 4.

What sales amount results in the maxium daily profit ? What is the maxium daily profit?

sales amount = _ textbooks

maxium daily profit=_dollars