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primary 5 | Maths | Rate & Ratio
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Kez
Kez

primary 5 chevron_right Maths chevron_right Rate & Ratio chevron_right Singapore

How to do c)

Date Posted: 3 years ago
Views: 312

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Chong Yi Chen
Chong Yi Chen's answer
4 answers (Tutor Details)
I made two solutions based on whether you might have studied a little bit of algebra yet. The first solution is simpler, but a little more advanced. The second solution doesn't use algebra, and is very similar to what you did in the previous part, so you should be able to understand it.

Hope this helps!
Kez
Kez
3 years ago
Thank you. My challenge is how to derive the equation 2×[(n+1)×n]? Can explain step by step to derive?