Miss Carissa Lim's answer to Ashok's Primary 4 Maths Singapore question.

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Miss Carissa Lim
Miss Carissa Lim's answer
34 answers (Tutor Details)
Hi Ashok,

Both of them bought the same set of game cards, which means they spent the same amount, so we draw that from the start of the model.
What's left is 3 units (ethan) and 1 unit (fred).
Comparing that, 2units=40, Find 1 unit=20 then take Fred's amount at first minus $20 to find the cost of the set of game cards.

Hope this helps!