LIU JIEQI REYMOND's answer to Nithiyanandam Geetha's Primary 4 Maths question.

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LIU JIEQI REYMOND
Liu Jieqi Reymond's answer
11 answers (A Helpful Person)
Use model drawing to understand the question better. The tank is filled up to 7/11. So you only need to find the 7 shaded units.