Answer:
$180
Step-by-step explanation:
Expected return E(r) =

D1= Next year's dividend
P1 = Next year's price
P0 = Current price
Since the beta is 1, it means this stock's return = market return = 20%
E(r) =

0.20 =

Multiply both sides by 155
31 = P1-149
Add 149 on both side s to solve for P1;
31+149 = P1
180 = P1
Therefore, the stock will sell at $180