Bran's scholarship pays $90 x 0.30 = $<<90*0.30=27>>27 to his tuition fee.

So, the total amount he still needs to pay is $90 - $27 = $<<90-27=63>>63.

And Bran will be able to earn $15 x 3 = $<<15*3=45>>45 after working for 3 months.

Therefore, the total amount he still needs to pay is $63 - $45 = $<<63-45=18>>18.

# Answer

18
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Bran's tuition fee is $90. He does a part-time job that pays him $15 per month and he has a scholarship that takes care of 30% of his tuition fee. If he needs to pay his tuition fee within 3 months, how much does Bran still need to pay?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
18
Bran's tuition fee is $90. He does a part-time job that pays him $15 per month and he has a scholarship that takes care of 30% of his tuition fee. If he needs to pay his tuition fee within 3 months, how much does Bran still need to pay?
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