Respuesta :
Answer:
value + value = value
1.05x + 0.85(20-x) = 0.90*20
---------------------------------
105x + 85*20 - 85x = 90*20
20x = 5(20)
x = 5 lbs (amt. of $1.05 coffee needed)
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20-x = 15 lbs (amt. of $0.85 coffee needed)
Answer:
value + value = value
1.05x + 0.85(20-x) = 0.90*20
---------------------------------
105x + 85*20 - 85x = 90*20
20x = 5(20)
x = 5 lbs (amt. of $1.05 coffee needed)
-----
20-x = 15 lbs (amt. of $0.85 coffee needed)