Students need not memorize 20+ formulas anymore for the topics profit-loss, discount, and tax.

`text(Profit%) = 100 xx` `(text(SalePrice)-text(CostPrice))``//text(CostPrice)`

`text(Discount%) = 100 xx` `(text(MarkedPrice)-text(SalePrice))``//text(MarkedPrice)`

`text(Tax%) = 100 xx` `(text(BilledPrice)-text(SalePrice))``//text(SalePrice)`

All these three formulas are very similar and has a simple explanation to the terms in numerator and denominator.

*This topic is not released for all, please contact edtechgomathi@gmail.com for access.*

*slide-show version coming soon*