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The Osborne Bakers want to make 30 pounds of a berry mix that costs $3.00 per pound to use in their pancake mix. They are using blueberries that cost $2.00 per pound and blackberries that cost $3.50 per pound. How many pounds of blackberries should be used in this mixture?

 Mar 9, 2020
 #1
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a + b = 30

2a + 3.5b = 90

 

 a = 30 - b

2(30 - b) + 3.5b = 90

60 - 2b + 3.5b = 90

1.5b = 30

b = 20

 

a = 30 - 20 = 10

 

10 lbs of blueberries and 20 lbs of blackberries.

 Mar 9, 2020

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