Eric Nicholas K's answer to Jafreena's Secondary 4 E Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
If the discount quantity is 30%, the new cost is only the remaining (100 - 30)% = 70% of the original price.

We evaluate this new discounted price.

The GST of 7% acts on this discounted price.