Percentages, Ratios and Financial Computation Notes for GATE DA: Concepts, Formulas, Worked Examples & Practice

    Percentages, Ratios and Financial Computation notes for GATE DA: 16 study cards covering concepts, formulas, shortcuts and exam traps, plus solved practice questions.

    Chapter Roadmap: Percentages, Ratios and Financial Computation

    Chapter Roadmap

    Quantitative Aptitude > Numerical Computation & Estimation

    1. Percentage Change in Geometry
    How dimensions affect area and volume. Successive percentage changes.
    2. Investment Returns & Weighted Percentages
    Calculating ROI across multiple assets. Weighted averages in portfolios.
    Goal: Build intuition for how proportional changes compound in shape and value.

    The Non-Linear Nature of Area

    Concept

    The Non-Linear Nature of Area

    100% 121% +10% side
    In one dimension, a increase is linear. But in two dimensions, percentage changes compound.
    Small changes in inputs lead to larger changes in output.

    The Multiplication Factor Method

    Formula

    The Multiplication Factor Method

    Increase
    Decrease
    For Geometry:

    Solving Rectangle Change Problems

    Method

    Solving Rectangle Change Problems

    1 Identify Changes: Determine % change for each dimension.
    2 Convert to Multipliers:
    3 Calculate Total MF:
    4 Derive Net Change:
    Note: If a dimension is unchanged, its multiplier is .

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    Percentages, Ratios and Financial Computation Notes for GATE DA: Concepts, Formulas, Worked Examples & Practice

    Percentages, Ratios and Financial Computation notes for GATE DA: 16 study cards covering concepts, formulas, shortcuts and exam traps, plus solved practice qu

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