If there r 2 pipes . one pipe fills a tank in 32 min while another pipe empty filled tank in 16 min. . if tank is already half filled so in how many min. it will filled full if both pipes opened at same time ?
Pure mathematics is the world's best game. It is more absorbing than chess, more of a gamble than poker, and lasts longer than Monopoly. It's free. It can be played anywhere - Archimedes did it in a bathtub.
Richard J. Trudeau, Dots and Lines
Mathematics is not a hurdle...It is a tool to achieve your goals .