Just out of curiosity does anyone here have the book: Algebra and Trig w/Analytic Geometry by Swokowski Cole?

I'm using the book and it doesn't explain the best but I only payed $15 for it so I'm satisfied.

Here's a problem I'm totally stumped on:

After playing 100 games, a major league baseball team has a record of .650 or 65% winning percentage. If the team wins only 50% of its games for the remainder of the season, after how many additional games will the record by .600 ?

Can someone lead me to finding an equation? Thanks so much.