On national lipstick day, half of the students who attended class wore colored lipstick.  Of those students who wore lipstick, one quarter wore red lipstick.  There were one-fifth as many students wearing blue lipstick as were wearing red lipstick.  If 200 students attended school that day, how many wore blue lipstick?
Of 200 students who attended class, half wore colored lipstick, or 200/2=<<200/2=100>>100 students wore colored lipstick.
Of those students who wore lipstick, one quarter wore red lipstick, or 100/4=<<100/4=25>>25 students wore red lipstick.
Since there were one-fifth as many students wearing blue lipstick as were wearing red lipstick, then 25/5=<<25/5=5>>5 students wore blue lipstick.
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