Q: A store mixes kenyan coffee worth 12$ per kilogram and venezuelan coffee worth 14$ per kilogram. The mixture is to sell for 13$ per kilogram. Find out how much of each should be used to make a

564-kilogram mixture

A:
Kenyan Coffee at $12/kilo x 282 kilogram = $3384
Venezuelan Coffee at $14/kilo x 282 kilogram = $3948
564 Kilograms mixture = $7332

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Question

Asked 8/16/2012 4:00:58 PM

Updated 9/19/2014 7:33:29 AM

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solve by elimination 9x-y=34, x+y=6 ,the solution is x = 4 , y = 2 .

Add the two equation, we ca get

9x - y + x + y = 34 + 6

10x = 40

x = 4 ,

x + y = 6

4 + y = 6

y = 6 - 4

y = 2 .

Add the two equation, we ca get

9x - y + x + y = 34 + 6

10x = 40

x = 4 ,

x + y = 6

4 + y = 6

y = 6 - 4

y = 2 .

Added 9/19/2014 7:33:29 AM

This answer has been confirmed as correct and helpful.

Confirmed by andrewpallarca [9/19/2014 11:21:40 AM], Rated good by andrewpallarca

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