Answer:
The composition of an alloy is 0.75%wt
Explanation:
Let alloy is a hypoeutectoid alloy.
So, we can apply lever rule which is shown below.
[tex]W_{a}=[/tex][tex]\frac{C_{0} -C_{a} }{C_{b}-C_{a} }[/tex]
We know that [tex]C_{a}=0.022[/tex] and [tex]C_{b}=6.7[/tex]
Given that [tex]W_{a}=0.109[/tex], we have to find [tex]C_{0}[/tex]
Thus,
[tex]0.109=\frac{C_{0}-0.022 }{6.7-0.022}[/tex]
Hence
[tex]C_{0}=0.75[/tex]%wt
