Problema Solution
How many g of gold should a coin of 56% gold be if when combined with a 13 g pure necklace, it forms a metal that is 66% gold?
Answer provided by our tutors
let x = the g of gold of the 54% coin that we need
0.56*x + 1.00*13 = 0.66(x + 13)
by solving the equation we find
x = 44.2 g
click here to see the step by step solution of the equation