You buy 354 shares at $57.56. The price falls 23.6% and you sell 59 of them. The price rises 5.5% and you buy 50 of them. If you were to sell everything at this final price, what would be your total profit/loss? I have a test on this sort of stuff next week with no calculator and I have to do them all extremely quickly. I'm trying to find the quickest/most accurate method to do this without a calculator.