True Discount Cheat Sheet

Complete guide to True Discount for competitive exams: basic concept of True Discount (simple interest based discount on bills), meaning of Present Worth (PW), Amount Due (or Sum Due) after certain time, relationship between Amount, Present Worth and True Discount (Amount = PW + TD), formula for True Discount (TD = Amount × Rate × Time / [100 + Rate × Time]), formula for Present Worth (PW = Amount × 100 / [100 + Rate × Time]), Banker's Discount concept, Banker's Gain (BG = BD – TD), relationship between Banker's Gain and True Discount (BG = TD² / PW), Banker's Gain = (Amount × Rate² × Time²) / [100 × (100 + Rate × Time)], finding sum due when TD and PW given, finding rate percent when discount and time given, problems on bills drawn and discounted, problems on immediate payment discount, and shortcut tricks for SSC, Banking, Railway, UPSC, and other government exams.