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UKMT Junior Mathematical Challenge, 2021

Algebra Difficulty 2.0 Junior Find the answer United Kingdom

When I have walked 20% of the way to school, I have 1200 metres more to walk than when I have 20% of the walk remaining. How far, in metres, is it from my home to my school?

(A) $1240$ (B) $1440$ (C) $1680$ (D) $1800$ (E) $2000$

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