Problema Solution
Brian's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Brian $4.30 per pound, and type B coffee costs $5.90 per pound. This month, Brian made 141 pounds of the blend, for a total cost of $742.30. How many pounds of type B coffee did he use?
Answer provided by our tutors
et
a = lbs of the type A coffee used
b = lbs of the type B coffee used
his month, Brian made 141 pounds of the blend
a + b = 141
the total cost of the blend is $742.30
4.30*a + 5.90*b = 742.30
by solving the system of equations
a + b = 141
4.30*a + 5.90*b = 742.30
we find
b = 85 lbs
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He used 85 pounds of type B coffee.