Ryan Koh's answer to Vincent Van Gough's Primary 5 Maths Whole Numbers Singapore question.

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Ryan Koh
Ryan Koh's answer
1 answers (Tutor Details)
1st
So to find Daniel, first u need to determine how much did B+C+D contribute, after that, since B+C is 25% of D, therefore B+C=0.25D, from there solving via algebra manipulation is quite straight forward