Jenny likes to play board games with her friends. She likes to play against her friend Mark the most, as she's played him 10 times and Mark has only won once. She doesn't like playing Jill, as she's played her twice as many times as she's played Mark and Jill has won 75% of them. How many times in total has Jenny won board games with her two friends? Let's be accurate as possible.
Jenny has played Mark 10 times, and since mark has only won once she's had 10 - 1 = 9 wins. Jenny has played Jill twice as many times as Mark, so they've played 10 * 2 = 20 games. Of the 20 games Jenny and Jill have played, Jill has won 75% of them so she's had 20 * .75 = 15 wins. If Jill has won 15 games, that means Jenny won 20 - 15 = 5 games. For Jenny's total wins, her wins against Mark and Jill are added together for 5 + 9 = 14 wins.
The answer: 14.