Sherraine Shu Wen's answer to AshleyChan Jie En's Primary 4 Maths question.

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Sherraine Shu Wen
Sherraine Shu Wen's answer
7 answers (A Helpful Person)
1st
There are 20 vases delivered altogether.
Among which,some of them are delivered safely,while some of them were broken.

Apply trial and error method,work backwards.

Hope my answer is clear enough to let you understand better. All the best!! =)