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.

SYLLABUS

Unit-1 : Ratio—Gaining and Sacrificing Ratio, Proportion, Percentage, Commission, Discount and Brokerage.

Unit-2 : Simultaneous Equations—Meaning, Characteristics Types and Calculations, Preparation of Invoice.

Unit-3 : Elementary Matrices—Definition and Calculations, Types of Matrices.

Unit-4 : Logarithms and Antilogarithms—Principles and Calcula-tions, Simple and Compound Interest.

Unit-5 : Averages—Simple, Weighted and Statistical Averages-Arith-metic Mean, Harmonic Mean, Geometric Mean, Profit and Loss.