Cheryl Ann Tan's answer to Rachel's Secondary 3 A Maths Singapore question.

Ask ManyTutors
done 2 Upvotes
clear 0 Downvotes
Cheryl Ann Tan
Cheryl Ann Tan's answer
7 answers (Tutor Details)
1st
Hope this helps :)
Eric Nicholas K
Eric Nicholas K
6 years ago
For (d), cross multiplication to interchange the positions is an easier approach.

Edit: actually part (c) same idea.