a$)$ Read the composition of the alloys designated by a point in the diagram.

Alloy X

Alloy Y

Alloy Z

b$)$ Which phase$($s$)$ will present in alloy $x$ at $900C?$ What are the composition of the phase$($s$)?$

c$)$ Which phase$($s$)$ will present in alloy $x$ at $700C?$ What are the relative proportions of the phases?

d$)$ Which phase$($s$)$ will present in alloy $x$ at $600C?$ What are the relative proportions of the phases?

e$)$ Which phase$($s$)$ will present in alloy $x$ at room temperature? What are the relative proportions and compositions of the phases present at room temperature?

f$)$ How many percent of A crystallizes in alloy $x$ during the eutectic reaction at $T_E?$