Question 1142602

I am stumped on this one, can someone help me out? I think I am overthinking this. I have literally stared at this and I have no Idea which way to go with it-- TIA

  
Matthew Plant has ​$36000 invested in stock A and stock B.  Stock A currently sells for ​$40 a share and stock B sells for ​$60 a share.  If stock B doubles in value and stock A goes up​ 50%, his stock will be worth ​$66000.  How many shares of each stock does he ​own?
<pre>She owns: {{{highlight_green(matrix(2,5, 300, shares, of, stock, A, 400, shares, of, stock, B))}}}