5.1 Finding the increase or decrease percent

5.2 Finding discounts

5.3 Estimation in percentages

5.4 Profit and loss

5.5 Sales Tax / Value Added Tax (VAT)

5.6 Goods and Service Tax (GST)

5.7 Compound Interest

5.8 Deducing a formula for Compound interest

5.9 Interest compounded annually or Half yearly (Semi Annually)

5.10 Application of compound interest