Camp Cedar has 40 boys, it has 3 times as many girls.  It needs 1 counselor for every 8 children.  How many counselors does Camp Cedar need?
Camp has 3 * 40 boys = <<3*40=120>>120 girls.
Camp Cedar has a total of 40 boys + 120 girls = <<40+120=160>>160 children.
Camp needs 1 counselor per 8 children, so 160 children / 8 children = <<160/8=20>>20 counselors needed.
#### 20