A man can route three-quarters of a kilometre against the stream in 11 1/4 minutes. The speed (in km/hr) of the man in still water is
(a) 2 (b) 3 (c) 4 (d) 5
''The most incomprehensible about Mathematics is that it is comprehensible''.
Kiran B. Mali
Each and every person in this world are having "constant mind"...DIFFERENTIATE others mind and INTEGRATE urs.MATHEMATICS SIMPLY MAKES YOU UNSTOPPABLE !!!