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Mathematics, 15.12.2021 23:10 slyspy3002

Mark wanted to know how tall the tree in his front yard is. At the same time of day, he measured the length of his shadow and the length of the shadow cast by the tree. Mark, who is 5 feet tall, cast a shadow 10 feet long, and the tree's shadow was 140 feet long. How many feet tall is the tree?

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