In preparation for the church fundraiser, Julia bakes one less than 5 cakes per day for 6 days.  Unfortunately, every other day, Julia's brother, Clifford, sneaks into Julia's house and eats one of Julia's cakes.  At the end of 6 days, how many cakes does Julia have remaining?
Julia baked one less than 5 cakes per day, or 5-1=<<5-1=4>>4 cakes per day.
For 6 days, Julia baked 4 cakes per day, for a total of 4*6=<<4*6=24>>24 cakes.
Over 6 days, every other day, Clifford sneaks into Julia's house and eats one of Julia's cakes resulting in disappearance of 6/2=<<6/2=3>>3 cakes.
At the end of 6 days, Julia has 24-3=<<24-3=21>>21 cakes remaining.
#### 21