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UKMT Junior Kangaroo, 2016

Algebra Difficulty 1.0 Junior Find the answer United Kingdom

A ball and a bat cost £90 in total. Three balls and two bats cost £210 in total. How much does a bat cost?

(A) £ $20$ (B) £ $30$ (C) £ $40$ (D) £ $50$ (E) £ $60$

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