Three alloys of copper and silver contain 35% pure silver, 55% pure silver, and 60% pure silver, respectively. How much of each type should be mixed to
produce 2.5 kilograms of an alloy containing 54.4% silver, if there is to be 0.5
kilogram more of the 60% alloy than the 55% alloy?
_kg of the 35% alloy
_kg of the 55% alloy
_kg of the 60% alloy