Bill has played 200 games of poker and won 63% of them. If he plays 100 more games and loses 43 of them, what is his new win percentage?
First find the total number of games Bill has won: 200 games * 63% = 
<gadget id="calculator">200*63*.01</gadget>
<output>126</output>
126 games.
Then find how many of the next 100 games he wins by subtracting the number he loses from the total: 100 games - 43 games = 
<gadget id="calculator">100-43</gadget>
<output>57</output>
57 games.
Then add his new wins to his old wins to find his total wins: 57 games + 126 games = 
<gadget id="calculator">57+126</gadget>
<output>183</output>
183 games.
Then add the old total number of games to the new total number of games to find the overall total number of games: 200 games + 100 games = 
<gadget id="calculator">200+100</gadget>
<output>300</output>
300 games.
Then divide the total number of games Bill won by the overall total number of games and multiply by 100% to find the percentage of games he won: 183 games / 300 games * 100% = 61%

<result>61</result>