Homework Help: maths

Posted by deniece on Friday, December 9, 2011 at 10:55am.

A coffee manufacture wants a new blend of coffee that sell for $3.90 per pound by mixing two coffees that sell for $2.75 and #5.oo per pound respectively. What amount of each coffee should be blended to obtain the desired mixture? Assume that the total weight of the desired blend is 100 pounds

maths - Reiny, Friday, December 9, 2011 at 11:22am
amount of $2.75 coffe --- x
amount of $5.00 coffee --- 100-x
solve for x ......

2.75x + 5(100-x) = 3.9(100)

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