Problema Solution
Trey's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Trey $5.50
per pound, and type B coffee costs $4.25per pound. This month's blend used three times as many pounds of type B coffee as type A, for a total cost of $456.25. How many pounds of type A coffee were used?
Answer provided by our tutors
Let
a = pound of type A
b = pounds of type B
b = 3a
5.50a + 4.25b = 456.25
........
click here to see the system of equations solved for a and b
........
a = 25 lb
b = 75 lb
25 pounds of coffee type A was used.