How far she travels to school if walking is slower
The child can get to school in fifteen minutes if she rides the bike. It takes her 45 minutes if she walks. Her speed when walking is given 10 km./hr. slower than speed when riding. How far she travels to school?
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After examining a child at his two year check up, the boy's pediatrician said z-score for his height relative to american 2 year olds was -1.88. Write a sentence to explain to the parents what that means.
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