ICSE Class 10 Answered
Hi Jeeva,
You have just mentioned the chapter name. Nothing specific. Go through this link here:
It is the Revision Notes. There are also problems in the MCQs and SAQs which you can practise if you want.
Also, I am giving you another link on our site:
http://www.topperlearning.com/study/icse/class-10/mathematics/text-book-solutions/selina-concise-mathematics-part-ii/407/sales-tax-and-value-added-tax/1018/b110c2s3e9#show-question-207331
Using this you can refer to Selina problems on this chapter.
Also, in the Sample paper tab, there is a list on Most Important Questions for 2017 board exam.
Refer to that. If you have any doubts you can post it here or on 13th April there is a FREE online class which you can attend from 4 pm to 5 pm and ask your doubts.