Tham KY's answer to Thivya Dharshini's Junior College 2 H1 Maths question.

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Tham KY
Tham Ky's answer
6052 answers (Tutor Details)
I am not familiar with this topic, I learned from internet and did this.
I don't understand what part a asked for "...which two vendors... ", there are only two vendors, why question asked for which two?
Tham KY
Tham KY
5 years ago
I try part b when free...