Simple & Compound Interest, and Population Growth Tricks and Formulas
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Simple Interest
Compound Interest
. Then,

When interest is compounded Annually,
Amount

When interest is compounded Halfyearly:

When interest is compounded Quarterly:

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

When Rates are different for different years, say
Then,

Present worth of Rs. x due n years hence is given by: Present
Population Formula
Depreciation Formula
Growth
[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]