Elizabeth's answer to H.'s Primary 5 Maths Rate & Ratio Singapore question.

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Elizabeth
Elizabeth's answer
12 answers (A Helpful Person)
1st
Draw out the respective models, find the common denominator for D's shares which is 6.
H.
H.
4 years ago
Thank you
Beverly
Beverly
4 years ago
hi there, i'd like to ask as i was a bit confused with the question just now. in your model, D has 6 units while M has 3 units. however, in the question it states that D:M is 3:1
H.
H.
4 years ago
Could you further elaborate why do we need to x3 for the 1 unit instead of x2?
Elizabeth
Elizabeth
4 years ago
Sorry both for the late reply. My answer is actually wrong. Initially, i did it the "right" way but it wasn't a whole number that i got initially. This "wrong method" actually resulted in whole number.

I asked ard with a few of my friends and agreed method 1 was correct. But i am waiting for right answer to be shown here.
H.
H.
4 years ago
Thank you!!!