Problem $5(40$ points$)$

Cite $($a$)$ the phases that are present and $($b$)$ the

phase compositions for the following alloy. Then

determine the relative amounts in terms of $($c$)$

mass fractions and $($d$)$ volume fractions of the

phases for the given temperature. Approximate

densities of the metals are also given in the table.

$75$wt$\%$Sn$-25$wt$\%$Pb at $175^($@$)$C$(345^($@$)$F$)$

Note: show how you determine the values in the

figure $($e$.$g$.,$ draw lines, arrows, dot$).$

please answer all questions, failure to do so will result in a downvote regardless of correctness