Answer:
Investment in stock X = 18000 * 29/60 = $8700
Investment in stock Y = 18000 * 31/60 = $9300
Explanation:
The expected return of portfolio is the function of the weighted average of the individual stock returns that form up the portfolio. The formula for the expected return of portfolio is,
Portfolio return = wA * rA + wB * rB + ... + wN * rN
Where,
Let x be the investment in stock X.
Let (1-x) be the investment in stock Y
0.1245 = x * 0.14 + (1 - x) * 0.11
0.1245 = 0.14x + 0.11 - 0.11x
0.1245 - 0.11 = 0.14x - 0.11x
0.0145 = 0.03x
0.0145 / 0.03 = x
x = 29/60 or 0.483333 or 48.3333%
If x is 29/60, then (1-x) will be,
1 - 29/60 => 31/60 or 0.516667 or 51.6667%
The total investment if of $18000
Investment in stock X = 18000 * 29/60 = $8700
Investment in stock Y = 18000 * 31/60 = $9300