You have two pounds of a mixture "A", of iron filings and zinc filings.

You have 500g of another mixture "B", of iron filings and zinc filings at 50% mass of each component.

We proceed to mix "A" and "B" and it turns out that the % mass of iron in the final mixture is 36%.

With these data, calculate the mass % of iron and zinc in the mixture "A" and "B"