A stock market comprises 4600 shares of stock A and 1600 shares of stock B. Assume the share prices for stocks A and B are $15 and $30, respectively

Explanation:

The complete question is:

Holding the market portfolio means having the same ratio of shares of stock A and stock B as the market composition.

The market compostion is:

Naming A the number of shares of stock A and B the number of shares of stock B that you purchase, then your investment will be:

And the ratio A to B is:

Solve for B and susbtitute in the equation for the investment:

To solve multiply the equation by 23 to eliminate the fraction:

Rounding to the nearest integer that is 590 shares of stock A.

And the amount of money invested in 590 shares of A is the price of the share multiplied by the number of shares:

his average speed in km per hour is ≈ 55.4 km/h and about 15.4 m/s.

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