Posted by **faye** on Tuesday, October 30, 2012 at 8:32am.

the manager of a starbucks store plans to mix A grade coffee that cost 9.50 per pound with grade B coffee that cost 7.00 per pound to create a 20 pound blend that will sell for 8.50 a pound. how many pounds of each grade coffee are required?

- math -
**Guru**, Tuesday, October 30, 2012 at 9:47am
12 pounds of A grade coffee and 8 pounds of B grade coffee.

- math -
**Reiny**, Tuesday, October 30, 2012 at 10:39am
amount of A coffee ---- x pounds

amount of B coffee ---- 20-x

9.5x + 7(20-x) = 8.5(20)

9.5x + 140 - 7x = 170

2.5x = 30

x = 12

So 12 pounds of grade A and 8 pounds of grade B

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