The school needs to buy 30 - 12 = <<30-12=18>>18 robes.

So the school will spend 18 x $2 = $<<18*2=36>>36.

# Answer

36
<|im_start|>system
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<|im_start|>user
A school choir needs robes for each of its 30 singers. Currently, the school has only 12 robes so they decided to buy the rest. If each robe costs $2, how much will the school spend?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
36
A school choir needs robes for each of its 30 singers. Currently, the school has only 12 robes so they decided to buy the rest. If each robe costs $2, how much will the school spend?
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