anonymous
  • anonymous
Coffee cafe makes 90lbs of coffee that costs $6 per lb. the types of coffee used to make this mixture cost $7 per lb and $4 per lb. how many lbs of the $7 per lb coffee should be used in this mixture?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Jim766
  • Jim766
to solve a mixture problem, I set up a table with the 1st two rows are the ingredients the 3rd row is the mix amt cost/lb total cost 4 7 mix 90 6 this is the infor from the problem
Jim766
  • Jim766
amt cost/lb total cost 90-x 4 x 7 mix 90 6
anonymous
  • anonymous
Is the answer 30 lb, 40, 50 , or 60 lbs

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Jim766
  • Jim766
now mult across amt cost/lb total cost 90-x 4 360 - 4x x 7 7x mix 90 6 360 equation is 360-4x + 7x = 540 now just solve for x
anonymous
  • anonymous
So the answer is 60 lbs right ?
Jim766
  • Jim766
right!

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