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

- math -
**Guru**, Tuesday, October 30, 2012 at 9:47am12 pounds of A grade coffee and 8 pounds of B grade coffee.

- math -
**Reiny**, Tuesday, October 30, 2012 at 10:39amamount 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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