Problema Solution
Kaitlin's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Kaitlin $5.90 per pound, and type B coffee costs $4.45 per pound. This month's blend used three times as many pounds of type B coffee as type A, for a total cost of $731.50. How many pounds of type A coffee were used?
Answer provided by our tutors
5.90 A + 4.45 B = 731.50
3 A = B
=> 3.90 A + 4.45 (3 A) = 731.50
=> 3.90 A + 13.35 A = 731.50
=> 17.25 A = 731.50
=> A = 42.41