Simple & Compound Interest, and Population Growth Tricks and Formulas

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Simple Interest

Compound Interest

. Then,

  • When interest is compounded Annually,


  • When interest is compounded Half-yearly:

  • When interest is compounded Quarterly:

  • When interest is compounded Annually, but the time is in fraction, say years.


  • When Rates are different for different years, say


  • Present worth of Rs. x due n years hence is given by: Present

Population Formula

Depreciation Formula


[Here, S. A. G. R. = Simple Annual Growth Rate, A. A. G. R. = Average Annual Growth Rate and C. A. G. R. = Compound Annual Growth Rate]