PhysChemTutor's answer to .....'s Secondary 2 Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
PhysChemTutor
Physchemtutor's answer
1551 answers (A Helpful Person)
1st
.....
.....
2 years ago
hi, thank you so much for the answer! however, the answer key states that the answer is 12. is the answer key wrong?
PhysChemTutor
PhysChemTutor
2 years ago
I am not sure. But i can't see why should it be 12.