Problema Solution
Lisa is mixing coffee to make her favorite blend. For every 5 pounds of mild roast she uses
6 pounds of espresso. If Lisa is making 4 pounds in total, how many pounds of espresso does she need?
Answer provided by our tutors
Let
x = pounds of mild roast
y = pounds of espresso
x : y = 5 : 6 cross multiply
6x = 5y
x + y = 4
........
click here to see the system of equations solved for x and y
........
x = 1.82 lb
y = 2.18 lb
Lisa needs 2.18 pounds of espresso.