https's answer to MOHITH's Primary 6 Maths Ratio Singapore question.

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Https's answer
57 answers (A Helpful Person)
P = 9/32 × 2/5 = 9/80
S = 5/16 × 3/5 = 3/16 = 15/80
P : S = 9 : 15 = 3 : 5 (Ans)