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Estimating Cost using Proportions









































Paul purchased 8 computers which cost him a total of $6,016

Mary purchased 8 printers which cost her $1,080.

Steve purchased 25 DVD movies which cost $350

Sally purchased 34 CD’s which cost $306.

41. How much would 3 computers, 4 printers, 15 DVD’s, and 18 CD’s cost ?

Comments for Estimating Cost using Proportions

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Sep 08, 2013
Average Cost
by: Staff


Answer

Part I


Paul purchased 8 computers which cost him a total of $6,016

cost of one computer = $6016 / 8 computers

cost of one computer = $752 per computer

Mary purchased 8 printers which cost her $1,080.

cost of one printer = $1080 / 8 printers

cost of one printer = $135 per printer

Steve purchased 25 DVD movies which cost $350

cost of one DVD movie = $350 / 25 DVD movies

cost of one DVD movie = $14 per DVD movie

Sally purchased 34 CD’s which cost $306.

cost of one CD = $306 / 34 CD’s

cost of one CD = $9 per CD



Calculate the average cost of a single computer.





Calculate the average cost of a single printer.







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Sep 08, 2013
Average Cost
by: Staff


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


Part II



Calculate the average cost of a single DVD.





Calculate the average cost of a single CD.






How much would 3 computers, 4 printers, 15 DVD’s, and 18 CD’s cost ?

Cost = (number of computers) * (cost of one computer)
+ (number of printers) * (cost of one printer)
+ (number of DVD’s) * (cost of one DVD)
+ (number of CD’s) * (cost of one CD)





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Sep 08, 2013
Average Cost
by: Staff


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


Part III



 Equation to calculate the cost to purchase computers,  printers,  DVD's, and CD's.





number of computers = 3
cost of a single computer = $752

number of printers = 4
cost of a single computer = $135

number of DVD’s = 15
cost of a single DVD = $14

number of CD’s = 18
cost of a single CD = $9



Cost = (3) * ($752)
+ (4) * ($135)
+ (15) * ($14)
+ (18) * ($9)

Cost = 2256
+ 540
+ 210
+ 162

Cost = $3168



Calculate the cost to purchase 3 computers,  4 printers,  15 DVD's, and 18 CD's.





The final answer is:

Cost = $3168







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Sep 08, 2013
Average Cost
by: Staff


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


Part IV


Cost to purchase 3 computers,  4 printers,  15 DVD's, and 18 CD's.








Thanks for writing.

Staff
www.solving-math-problems.com


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