Since a dozen has 12 items, a half dozen has 1/2*12=<<6=6>>6 items.

Since Jamal bought four half dozen colored crayons, he bought 4*6 = <<4*6=24>>24 colored crayons.

If each crayon's cost was $2, Jamal paid $2*24 = $<<2*24=48>>48 for all the crayons he bought.

# Answer

48
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Jamal bought 4 half dozen colored crayons at $2 per crayon. What was the total cost of the crayons that she bought?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
48
Jamal bought 4 half dozen colored crayons at $2 per crayon. What was the total cost of the crayons that she bought?
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