Below is the Binary Phase Diagram for Silver and Copper $($Ag$-$Cu$).$ An alloy is made by mixing $5$ grams of Ag with $95$ grams of Cu$,$ melted together at $1100$oC$,$ and then worked at $800$oC$.$ After the shape is set, the alloy is cooled to room temperature, which brings out some beta phase from the alloy and strengthens it$.$ Atomic percent copper

What is the predicted weight percentage of this beta phase?