The total revenue from black shirts was 100 * $30 = $<<100*30=3000>>3000.

The total revenue from white shirts was 100 * $25 = $<<100*25=2500>>2500.

The total revenue from all shirts sold was $3000 + $2500 = $<<3000+2500=5500>>5500.

Tas and his friends ended up making $5500 / 25 minutes = $220 per minute.

# Answer

220
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Tas and his friends put up a t-shirt for sale. They ended up selling 200 t-shirts in 25 minutes. Half of the shirts were black and cost $30, while the other half were white and cost $25. How much money did they make per minute during the sale?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
220
Tas and his friends put up a t-shirt for sale. They ended up selling 200 t-shirts in 25 minutes. Half of the shirts were black and cost $30, while the other half were white and cost $25. How much money did they make per minute during the sale?
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