Answer:
The market price of the security will be $42.86 when the Beta doubles and all other variables remains constant.
Step-by-step explanation:
Given information - Current market price = $60
Risk free rate = 6%
Expected rate of return = 10%
Market risk premium = 8%
In this question we have to find the market price of the security when beta doubles it self, the formula which we can use to take out the market price is,
\frac{DIVIDEND}{NEW\:EXPECTED\:RATE\: OF\: RETURN}
But here we have to first find out both the dividend and new expected rate of return and it is also told here that beta doubles itself but we don't know what the initial beta is, so lets take out what beta is , using formula for expected rate of return
Expected rate of return = Risk free rate + Beta x Market risk premium
10% = 6% + Beta x 8%
4% = Beta x 8%
Beta = 4% / 8%
Beta = 1% / 2% = .01 / .02 = .5
Now doubling the beta = .5 x 2 = 1
Putting this value of beta in the expected rate of return formula to calculate the new expected rate of return,
New expected rate of return = 6% + 1 x 8%
= 14%
Now we just have to find the dividend , which we can by using formula of
Market price = \frac{DIVIDEND}{\:EXPECTED\:RATE\: OF\: RETURN}
$60 = Dividend / 10% (10% = .1)
$60 x .1 = Dividend
$6 = Dividend
Now we have both dividend and new market rate of return and we just have to put these values in the formula
\frac{DIVIDEND}{NEW\:EXPECTED\:RATE\: OF\: RETURN}
New market price = $6 / 14% (14% = .14)
= $6 / .14
= $42.86