When investing money in stock markets, often investors look at the net profit margin ratio for a company. The net profit margin ratio for two companies is modelled by 5x/2x-3 for company A and by 8x/3x-1 for company B where x is the number of items sold in thousands. Determine, using an algebraic solution, the number of items sold for both companies to have the same net profit margin ratio.

1500 items must be sold per month.