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Algebra Difficulty 1.0 Junior Find the answer United Kingdom

What is the sum of $20\%$ of $40\%$ of $60$ and $40\%$ of $60\%$ of $80$ ?

(A) $20$ (B) $20.4$ (C) $24$ (D) $24.4$ (E) $28$

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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.