Problema Solution
in a metal alloy composed entirely of zinc and copper, 3 of every 14 pounds in zinc. If the allot weighs 686 lbs, how many pounds of zinc and how many pounds of copper does it have?
Answer provided by our tutors
3/14 is Zinc and what is left 1 - 3/14 = 11/14 is Copper
Thus for 686 lbs we have
686(3/14) = 147 lbs is Zinc and what is left 686 - 147 = 539 lbs is Copper.