Benedict Tay's answer to QUEEN's Primary 6 Maths question.

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Benedict Tay
Benedict Tay's answer
8 answers (Tutor Details)
1st
Let's group the number of 20cents and 50 cents coins into groups, containing 3 times as many 20cents as 50cents. From there, we find out how many "groups" there are and then we can find out how many 50cents coins there are in total.