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Different Math problem

by Mary
(Brooklyn, NY)

1- to rent a car at Enterprise, it costs $70 for every 2 hours. How much does it cost to rent a car for 9 hours?

2- There are 248 Students at th prom. 178 of the students are boys. The rest are girls. Find teh percent that of the students at the prom that are boys. Find the percet that are girls.

3- Kayshauna goes to bike shop where it costs her $24 to rent a bike for 3 hurs. t this rate how muchdoes it cost to rent a bike for 10 hours.


4- complete the chart below.

fraction Decimal Percent

? 0.65 ?

? ? 150%

? ? 14%

2/3 ? ?



5- What number completes the proportion 10/15 = n/24


6- The ratio of pounds to ounces is 1 to 16. How many ounces does a 5-pound box weight?


7- customer at Best Buy can buy 4 DVDs for $15. Write a ratio for DVD's to cost. Then, Find out how many DVDs you could buy at Best Buy with $45.

8- Mr. Halvorson drove from NYC to Buffalo at an average rate of 96 miles every 2 hour. At this rate, ho far did he drive after 3 hours?

9- A hybrid car can travel 260 miles using only 5 gallons of gas. How many miles can the car travel using only 1 gallon of gas.

10- At the same rate in the above problem, how man y iles and the hybrid car travel using 15 gallons of gas?


11- Complete the Chart:


Fraction Decimal percent


? 0.7 ?

3/4 ? ?

? ? 66 2/3%

? ? 80%

? 0.8 ?

? ? 12.5%






A group of 400 studets were asked to choose an after school activity they would like to join. Make a pie chart to represent their choices.

a- How many studnets chose the Art club? this is not "what percent"
b- What percentage of teh studnets chose drama club?
c- How many students chse chess club?
d- How many studnets chose the Drama club?
e- How many students chose Art club than computer club?




13- When jasmine runs on teh treadmill, she burns 250 calories every 30 minutes.

At this rate, how many calories does she burn in 120 minutes?

If jasmine has a goal of burinign 500 calories. how many minutes would seh have to run for?








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Different Math problem

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May 31, 2011
Rating
starstarstarstarstar 		Different Math Problems
by: Staff

-------------------------------------

Part III


10- At the same rate in the above problem, how many miles will the hybrid car travel using 15 gallons of gas?

(52 miles per gallon)*(15 gallons) = 780 miles


11- Complete the Chart:


Fraction Decimal percent


? 0.7 ?

70/100, 0.7, 70%

Reducing the fraction 70/100 to the lowest terms

7/10, 0.7, 70%



3/4 ? ?

¾, 0.75, 75%



? ? 66 2/3%

2/3, 0.666666667, 66 2/3%


? ? 80%

4/5, 0.80, 80%


? 0.8 ?

4/5, 0.8, 80%



? ? 12.5%

1/8, 0.125, 12.5%



A group of 400 students were asked to choose an after school activity they would like to join. Make a pie chart to represent their choices.

a- How many students chose the Art club? this is not "what percent"
b- What percentage of the students chose drama club?
c- How many students chose chess club?
d- How many students chose the Drama club?
e- How many students chose Art club than computer club?

I need more information to answer this question.





13- When jasmine runs on the treadmill, she burns 250 calories every 30 minutes.

At this rate, how many calories does she burn in 120 minutes?


(250 calories)/(30 minutes) = calories burned per minute

(calories burned per minute) * (total minutes) = total calories burned


(250 calories)/(30 minutes) = 8.33333 calories burned per minute


[(250 calories)/(30 minutes)] * (120 total minutes) = 1000 total calories burned



If jasmine has a goal of burning 500 calories. how many minutes would she have to run for?

(500 calories)/[(250 calories)/(30 minutes)] = 60 minutes








Thanks for writing.

Staff
www.solving-math-problems.com

May 31, 2011
Rating
starstarstarstarstar 		Different Math Problems
by: Staff

----------------------------------

Part II


3- Kayshauna goes to bike shop where it costs her $24 to rent a bike for 3 hours. t this rate how much does it cost to rent a bike for 10 hours.


Dividing $24 by 3 hours will give the rental cost per hour. Multiplying the rental cost per hour by the 10 hours will give us the total cost to rent the bike for 10 hours.


[($24)/(3 hrs)]*(10 hrs)

= ($24/3)*(10)*(hrs/hrs)

Note that the (hrs/hrs) in this expression cancel one another, leaving the final answer in $

= ($24/3)*(10)*(1)

= ($8)*(10)

= $80 to rent the bike for 10 hours


4- complete the chart below.

fraction Decimal Percent

? 0.65 ?

65/100, 0.65, 65%

Reducing the fraction 65/100 to the lowest terms

13/20, 0.65, 65%


? ? 150%

150/100, 1.50, 150%

Reducing the fraction 150/100 to the lowest terms

3/2, 1.50, 150%


? ? 14%

14/100, 0.14, 14%

Reducing the fraction 14/100 to the lowest terms

7/50, 0.14, 14%


2/3 ? ?

2/3, 0.67, 67%


5- What number completes the proportion 10/15 = n/24

to solve for n, multiply each side of the equation by 24

10/15 = n/24

(10/15)*24 = (n/24)*24

(240/15) = (n/24)*24

(240/15) = n*(24/24)

(240/15) = n*(1)

(240/15) = n

16 = n

n = 16

10/15 = n/24

10/15 = 16/24


6- The ratio of pounds to ounces is 1 to 16. How many ounces does a 5-pound box weight?

The proportion is:


(16 ounces)/(1 pound) = (x ounces)/(5 pounds)

Multiply each side of the equation by 5 pounds to solve for x

(16 ounces)/(1 pound) = (x ounces)/(5 pounds)

(5 pounds)*[(16 ounces)/(1 pound)] = (5 pounds)*[(x ounces)/(5 pounds)]

(5 * 16 ounces)*[(pounds)/(pound)] = (x ounces)*[(5 pounds)/(5 pounds)]

(5 * 16 ounces)*1 = (x ounces)*1

80 ounces = x ounces

There are 80 ounces in 5 pounds


7- customer at Best Buy can buy 4 DVDs for $15. Write a ratio for DVD's to cost. Then, Find out how many DVDs you could buy at Best Buy with $45.

Ratio of DVD’s to cost:

4 DVD’s : $15 cost

Ratio = (4 DVD)/($15)

= 0.266667 DVD per $1

DVD’s you could buy at Best Buy with $45

= [(4 DVD)/($15)]*($45)

= 12 DVD’s can be purchased for $45


8- Mr. Halvorson drove from NYC to Buffalo at an average rate of 96 miles every 2 hour. At this rate, ho far did he drive after 3 hours?

(96 miles)/(2 hours) = rate per hour

(96 miles)/(2 hours) = 48 miles per hour

(48 miles per hour)*(3 hours) = 144 miles

Mr. Halvorson drove 144 miles every 3 hours



9- A hybrid car can travel 260 miles using only 5 gallons of gas. How many miles can the car travel using only 1 gallon of gas.

(260 miles)/(5 gal) = miles per gallon

(260 miles)/(5 gal) = 52 miles per gallon

The hybrid car can travel 52 miles on one gallon of gas.

-------------------------------------
May 31, 2011
Rating
starstarstarstarstar 		Different Math Problems
by: Staff


Part I

The question:

by Mary
(Brooklyn, NY)

1- to rent a car at Enterprise, it costs $70 for every 2 hours. How much does it cost to rent a car for 9 hours?

2- There are 248 Students at the prom. 178 of the students are boys. The rest are girls. Find the percent that of the students at the prom that are boys. Find the percent that are girls.

3- Kayshauna goes to bike shop where it costs her $24 to rent a bike for 3 hours. t this rate how much does it cost to rent a bike for 10 hours.


4- complete the chart below.

fraction Decimal Percent

? 0.65 ?

? ? 150%

? ? 14%

2/3 ? ?



5- What number completes the proportion 10/15 = n/24


6- The ratio of pounds to ounces is 1 to 16. How many ounces does a 5-pound box weight?


7- customer at Best Buy can buy 4 DVDs for $15. Write a ratio for DVD's to cost. Then, Find out how many DVDs you could buy at Best Buy with $45.

8- Mr. Halvorson drove from NYC to Buffalo at an average rate of 96 miles every 2 hour. At this rate, ho far did he drive after 3 hours?

9- A hybrid car can travel 260 miles using only 5 gallons of gas. How many miles can the car travel using only 1 gallon of gas.

10- At the same rate in the above problem, how many miles will the hybrid car travel using 15 gallons of gas?


11- Complete the Chart:


Fraction Decimal percent


? 0.7 ?

3/4 ? ?

? ? 66 2/3%

? ? 80%

? 0.8 ?

? ? 12.5%






A group of 400 students were asked to choose an after school activity they would like to join. Make a pie chart to represent their choices.

a- How many students chose the Art club? this is not "what percent"
b- What percentage of the students chose drama club?
c- How many students chose chess club?
d- How many students chose the Drama club?
e- How many students chose Art club than computer club?




13- When jasmine runs on the treadmill, she burns 250 calories every 30 minutes.

At this rate, how many calories does she burn in 120 minutes?

If Jasmine has a goal of burning 500 calories. how many minutes would she have to run for?



The answer:

1- to rent a car at Enterprise, it costs $70 for every 2 hours. How much does it cost to rent a car for 9 hours?

Dividing $70 by 2 hours will give the rental cost per hour. Multiplying the rental cost per hour by the 9 hours will give us the total cost to rent the car for 9 hours.


[($70)/(2 hrs)]*(9 hrs)

= ($70/2)*(9)*(hrs/hrs)

Note that the (hrs/hrs) in this expression cancel one another, leaving the final answer in $

= ($70/2)*(9)*(1)

= ($35)*(9)

= $315 to rent the car for 9 hours



2- There are 248 Students at the prom. 178 of the students are boys. The rest are girls. Find the percent that of the students at the prom that are boys. Find the percent that are girls.

(178/248)*100 = 71.77% are boys

100.00 – 71.77 = 28.23% are girls

----------------------------------

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