A child and a dog raced across a field. The dog ran at 30 feet per second. The child ran at 20 feet per second. The dog reached the other end of the field 1 second before the child. Find the length of the field.
A child and a dog raced across a field. The dog ran at 30 feet per second. The child ran at 20 feet per second. The dog reached the other end of the field 1 second before the child. Find the length of the field.
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