First we multiply 50 and 13 and 3/4 13 and 3/4 could also = 13.75 sooo lets multiply 50 x 13.75 = 687.50 so $687.50 was spent on the stock now lets fund out how much they sold them for we multiply 12 and 50 50 x 12 = 600 now we need to find out the loss by subtracting $687.50 - $600 =$ 87.50 so that means this company lost $87.50 :( hope this helps :) and don't forget 2 MARK ME BRAINLIEST! :D