Bern Ong @ 88Tuition's answer to Benson's Secondary 1 Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Bern Ong @ 88Tuition
Bern Ong @ 88tuition's answer
102 answers (A Helpful Person)
1st
Learn to use Average to help u;) You can do it;)