You are managing a portfolio of 10 stocks that are held in equal dollar amounts. the current beta of the portfolio is 1.8, and the beta of stock a is 2.0. if stock a is sold and the proceeds are used to purchase a replacement stock, what does the beta of the replacement stock have to be to lower the portfolio beta to 1.7

The Beta of Replacement Stock is 1

Explanation:

First we need to find the Beta of Portfolio after selling the Stock A.

using following formula

it is assume that all stock has equally weighted hence stock A has weight of 10% since and remaining portfolio weight (100%-10%) = 90%

Portfolio beta = (R Pb x Weight) + ( Stock A Beta x Weight)

1.8 = ( R Pb x 0.9 ) + ( 2.0 x 0.1 )

1.8 = ( R Pb x 0.9 ) + 0.2

1.8 - 0.2 = ( R Pb x 0.9 )

1.6 = 0.9 R Pb

R Pb = 1.6 / 0.9 = 1.778

Now Using the same formula we will find beta of replacement stock.

Portfolio beta = (R Pb x Weight) + ( Replacement stock Beta x Weight)

1.7 = ( 1.778 x 0.9) + (Replacement stock Beta x 0.1)

1.7 = 1.6 + (Replacement stock Beta x 0.1)

1.7 - 1.6 = (Replacement stock Beta x 0.1)

0.1 = (Replacement stock Beta x 0.1)

Replacement Stock beta = 0.1 / 0.1

Replacement stock beta = 1

if kj of heat is transferred o 1200 g liquid water at 36'c, what would the new temperature of the water be? (he specific heat capacity of liquid water is 4.186 j/g''c)

a. 15'c

b.100'c

c.51'c

d.36'c

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