jiho's answer to Rosie's Secondary 3 E Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
jiho
Jiho's answer
7 answers (A Helpful Person)
1st
hi! hope it helps:)
not completely sure whether this is right, you can check once again if I made any calculation mistakes.