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Back to 5.5 Solve Mixture Applications with Systems of Equations

5.5 Exercise 38

Avg difficulty 2.5

Translate to a system of equations and solve.

Julia and her husband own a coffee shop. They experimented with mixing a City Roast Columbian coffee that cost $7.80 per pound with French Roast Columbian coffee that cost $8.10 per pound to make a 20 pound blend. Their blend should cost them $7.92 per pound. How much of each type of coffee should they buy?

OpenStax Elementary Algebra 2e, 5.5 Solve Mixture Applications with Systems of Equations, exercise 38

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Adapted from Elementary Algebra 2e © 2020 Rice University. Licensed under CC BY 4.0. Source: Elementary Algebra 2e. Imported at revision 77a933c.