Aptitude tricks for beginner and last minute revision
1. Train Problems Travelling towards each other Relative speed= X+Y km/hr Travelling in the same direction Relative Speed= X-Y km/hr 2. Time and Work Work done by A and B Work of A in one day = LCM of X and Y X X men in Y hours Z days: Here, M= Men H= Hours D= Days W= Work 3. Boats Problem Let, Downstream speed = A km/hr Upstream speed = B km/hr Speed of boat in still water = 1/2(A+B) km/hr Speed of Stream = 1/2(A-B) km/hr 4. Percentage Problem Problem with phrases, a is what percent of b what percent of b is a what percent is a of b Use 5. Interest Problems Simple Interest problems Here, SI = Simple Interest