A man can row at a speed of 20 km/hr in still water to a certain upstream point and back to the starting point in a river which flows at 5 km/hr. Find his average speed for total journey.
Speed of the man in still water = 20 km/hr Speed of the stream = 5 km/hr Speed downstream = (20 + 5) = 25 km/hr Speed upstream = (20 - 5) = 15 km/hr Average speed = (Speed downstream x Speed upstream)/Speed in still water = (25 x 15)/20 = 18.75 km/hr
Y is the daughter of H, who is married to Z. W is the son of Z, who is the father of V. V is not a female. How many girl child does H have?
. As per which of the following expressions means S is the uncle of Q?
Who is the daughter-in-law of R?
Who among the following is brother-in-law of M?
There are only six members in a family. J is the only daughter of T. T is husband of U. R is the only daughter in law of U. K is the only son of his par...
How is S related to O?
If A is brother of B, C is brother of A, D is brother of E. E is mother of B and F is father of C, how is D related to F?
If K is the son of J. E is mother of O, who is the brother of Y. J is the mother of W. How is K related to E, if W is the daughter of Y?
How is O related to N’s brother?
N is the father of P. O is the only son of H, who is married to N. Z is married to Y, who is the child of H. How is Z related to N?
