I suppose you are trading with a tally account $ 25,000 and margin requirements by 1%. If we assume that the current price of $ EURUSD is 1.3225 / 28 and you've put something trading market for the purchase of one lot to 100,000 euros at 1.3228, expected to rise the value of the euro against the U.S. dollar. At the same time it you put a stop loss at 1.3178 which represents the maximum loss that can be incurred and that is equal in this case 2% of the account balance, in the event that took the market path reverse your expectations, and then the value of this potential loss would be 50 points without the execution price and on the other side will develop is taking profit at 1.3378 150 points, the highest price execution. In this treatment, you run the risk of 50 points to win 150 points, which means that the rate of return to risk in this trade is one part risk all return three parts. Which means another he must believe your expectations once at least in every three times traded so keep a winner. Nominal value of this transaction is $ 132.280 (100,000 at 1.3228). The required margin rate is 1% of the total value of which is equal to $ 1,322.80 ($ 132.280 * 0.01). If ratified expectations and the euro rose against the dollar and the price reached a suspension order at 1.3378. Trading center is closed and then the total profit in this trade $ 1,500 where each point is equal to $ 10.