The distance between John's house and Albert’s house is 8 1/3 miles. A park is located on a straight path between the two houses. If the park is 3 4/5 miles from John’s house, how far is the park from Albert’s house? As a fraction.

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The average mass of a group of children is 50 kilograms. Todd, who has a mass of 62 kilograms, then joins the group. This raises the average mass of the group to 52 kilograms. How many children were in the original group

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