<human>:  Jamal bought 4 half dozen colored crayons at $2 per crayon. What was the total cost of the crayons that she bought?
<bot>: How many items are in a half dozen? ** Since a dozen has 12 items, a half dozen has 1/2*12=<<6=6>>6 items.
How many crayons did Jamal buy? ** Since Jamal bought four half dozen colored crayons, he bought 4*6 = <<4*6=24>>24 colored crayons.
How much did Jamal pay for the crayons? ** If each crayon's cost was $2, Jamal paid $2*24 = $<<2*24=48>>48 for all the crayons he bought.
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