The shadow of Jane is 1.5 / 0.5 = <<1.5/0.5=3>>3 times smaller than her height.

The height of the tree is therefore 3 times bigger than the shadow, so it's 3 * 10 = <<3*10=30>>30 meters tall

# Answer

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<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Jane is looking at a tree. At the same time, the tree and Jane are casting shadows - the tree of 10 meters and Jane of 0.5 meters. Jane is 1.5 meters tall. How tall is the tree?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
30
Jane is looking at a tree. At the same time, the tree and Jane are casting shadows - the tree of 10 meters and Jane of 0.5 meters. Jane is 1.5 meters tall. How tall is the tree?
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