Alec has won 49% of the 200 games of chess he has played. He would like to have won exactly 50% of his games. What is the smallest number of extra games he needs to play?
A 0 B 1 C 2 D 3 E 4
E
Winning 49% of 200 games means winning 98 games and not winning 102. For Alec to have equal number of wins and not-wins he needs to win 102 − 98 games, that is 4 games. This will mean that he will have 102 wins out of 204 making a 50 % rate of success.
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