At the end of Januaryof last year, Stock A was selling at A dollars a share, and stock B was seling at B dollars a share, where A > B. Between January and June, stock A rose x% and stock B rose y% where y>x. Suppose a certain investor owned N shares of A, but at the end of January sold those shares andused all of that money to buy shares of B and held those shares through June. Write the formula for the dollar amount increase in the portfolio from January to June.

N*B*x/100

Step-by-step explanation:

To determine an equation of the total number of dollars, it is necessary to review the variables that influence

The most important, N that would be the number of shares of A.

The other variable is B, since it would be the price of the shares that were purchased.

Lastly, we have x, since he originally had was A's shares, therefore his increase occurred in A's shares, that is, x.

Therefore, the equation would be:

N * B * x / 100

It is divided by 100 since x is a percentage.