Cost per share:
13 3/4 = 13 + 3/4 = (13 * 4 + 3 ) / 4 = (52 + 3 ) / 4 = 55 / 4
Selling price:
12
Loss per share: 55 / 4 - 12 = ( 55 - 48 ) / 4 = 7 /4
7 / 4 = 4 / 4 + 3 / 4 = 1 + 3/4 = 1 3/4 = 1.75
Total loss = loss per share * number of shares
=> 50 * 1.75 = 87.5
Answer: 87.5