Major League Baseball is divided into the National League and the American League. The World Series championship is a “best-of-seven” series between the National League champion and the American League champion; the first team to win four games wins the series. Between 1903 and 2009 there have been 105 World Series and an American League team has won 62 of those championships. What percent of the 105 World Series were won by a National League team? Express your answer to the nearest whole percent.

Answer 1

That is a long way to ask you to convert 43/105 to a percent.

105 - 62 = 43 is, obviously, the number of World Series won by the National League, during that interval.