She uses 2 pencils a day because 10 / 5 = <<10/5=2>>2

She will use 90 pencils in 45 days because 2 x 45 = <<2*45=90>>90

She will need 3 packs of pencils because 90 / 30 = <<90/30=3>>3

She will spend $12 because 3 x 4 = <<3*4=12>>12

# Answer

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<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Judy uses 10 pencils during her 5 day school week. A 30 pack of pencils costs $4. How much will she spend on pencils over 45 days?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
12
Judy uses 10 pencils during her 5 day school week. A 30 pack of pencils costs $4. How much will she spend on pencils over 45 days?
train