Trina's answer to Rosie's Secondary 4 E Maths Singapore question.

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Trina
Trina's answer
130 answers (A Helpful Person)
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Rosie
Rosie
8 months ago
Ty hiw did u get 320?
Trina
Trina
8 months ago
mutiply both sides of equation by (36x36) so on the right side it'll be 20/81 x36x36=320