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Number theory Difficulty 1.0 Junior Find the answer United Kingdom

Brianna has £20, all in 5p coins, and £50, all in 2p coins. How many coins does she have in total?

(A) $200$ (B) $290$ (C) $1000$ (D) $2540$ (E) $2900$

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Source: UK Mathematics Trust, licensed © UK Mathematics Trust; past papers published free at ukmt.org.uk. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.