Let the speeds of boats ‘A’ and ‘B’ in still water be 8x km/hr and 9x km/hr Therefore, speed of the current = 0.25 × 8x = 2x km/hr According to the question, 8x + 2x = 700/10 Or, 10x = 70 Or, x = 7 Therefore, upstream speed of boat ‘B’ = 9x – 2x = 7x = 49 km/hr Downstream speed of boat ‘B’ = 9x + 2x = 11x = 77 km/hr Required time taken = (147/49) + (770/77) = 3 + 10 = 13 hours
How is S related to B?
E is the son of A. D is the son of B. E is married to C. C is B’s daughter. How is D related to E?
Who is the wife of E?
How is S related to Z?
Answer the questions based on the information given below.
‘L@M’ means ‘L is the father of M’.
‘L&M’ means ‘L is the sist...
There are six persons, M, N, O, P, Q and R in a family. R is the paternal grandmother of M. O is the sister of Q. N is the father of O. M is the only so...
How D is related to E?
How is H related to son of M?
Introducing a woman, a man said, 'Her sister’s mother is the only daughter of my grandmother.' How is the man related to this woman?
How is S related to R, if T has only one daughter?