1. Ratio : Profit Ratio, Sacrifice Ratio and Gain Ratio 2. Proportion 3. Percentage 4. Commission and Brokerage 5. Discount 6. Simultaneous Equations 7. Preparation of Invoice 8. Elementary Matrices 9. Logarithms and Antilogarithms 10. Simple Interest 11. Compound Interest 12. Averages 13. Profit and Loss
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