Eric Nicholas K's answer to NG BAN WAH's China question.

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
One idea you can count on for this question. You are a tutor yourself after all, so if there are any mistakes in my working, you can modify my workings accordingly.
NG BAN WAH
NG BAN WAH
1 year ago
Great!
NG BAN WAH
NG BAN WAH
1 year ago
Great!