Problema Solution
Charmaine's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Charmaine 4.30 per pound, and type B coffee costs 5.55 per pound. This month, Charmaine made 161 pounds of the blend, for a total cost of 769.80 . How many pounds of type B coffee did she use?
Answer provided by our tutors
a+b = 161
so, a = 161-b
now, 4.3a+5.55b = 769.80
or 692.3 - 4.3b +5.55b = 769.80
or b = 62 pounds