A 90 wt% Ag-10 wt% Cu alloy is heated to

A 90 wt% Ag-10 wt% Cu alloy is heated to a temperature within the b + liquid phase region. If the composition of the liquid phase is 85 wt% Ag, determine:,(a) The temperature of the alloy,(b) The composition of the b phase,(c) The mass fractions of both phases