HELP!! Sunflower Seed Mixture Math Problem: Agway Gardens has sunflower seeds that...

P

Puppy

New member
...sell for $0.49 per pound? Agway Gardens has sunflower seeds that sell for $0.49 per pound and gourmet bird seed mix that sells for $0.89 per pound. How much of each must be mixed to get a 20-pound mixture that sells for $0.73 per pound?

I came up with this equation:

let S = Sunflower seeds
B = Bird seed mix

I came up with this equation: (0.49S + 0.89B) / 20 = 0.73

But I couldn't find the solution.

Thank you for your help!
 
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