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Algebra Difficulty 3.0 AMC 10/12 Find the answer Canada

Ginger walks at 4 km/h and runs at 6 km/h. She saves $3\tfrac{3}{4}$ minutes by running instead of walking from her home to her school. What is the distance, in kilometres, from her home to her school?

(A) $7\dfrac{1}{2}$ (B) $3\dfrac{3}{4}$ (C) $1\dfrac{7}{8}$ (D) $1\dfrac{1}{4}$ (E) $\dfrac{3}{4}$

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