Marlene wants to buy 12/2 = <<12/2=6>>6 shirts.

The discount price of the shirt is $50 x 20/100 = $<<50*20/100=10>>10.

So, the shirt will only costs $50 - $10 = $<<50-10=40>>40 each.

Thus, Marlene will pay $40 x 6 = $<<40*6=240>>240 for the 6 shirts.

# Answer

240
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Marlene wants to buy half a dozen of shirts to avail of the sale. The regular price of a shirt is $50 and is now on sale at a 20% discount. How much will Marlene pay for the shirts?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
240
Marlene wants to buy half a dozen of shirts to avail of the sale. The regular price of a shirt is $50 and is now on sale at a 20% discount. How much will Marlene pay for the shirts?
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