Tim watches 2 shows.  One of them is a half-hour show per episode and the other is a 1-hour long show per episode.  The short show had 24 episodes and the long show had 12 episodes.  How many hours of TV did he watch?
How many hours of TV does the short show have? ** The short show has 24*.5=<<24*.5=12>>12 hours of TV
How many hours of TV does the long show have? ** The long show is 12*1=<<12*1=12>>12 hours
How many hours of TV does Tim watch? ** So in total he watches 12+12=<<12+12=24>>24 hours
#### 24