A boat goes 65 km in upstream in 5 hours and takes 4 hours to complete a distance of 20 km in downstream. Find the speed of boat in still water.
Speed of boat in still water = (D + U)/2 Upstream speed (U) = 65/5 = 13 km/hr Downstream speed (D) = 20/4 = 5 km/hr Speed of boat in still water = (13 + 5)/2 = 18/2 = 9 km/hr
Gopal is son of Paras’s father’s sister. Arun is son of Tanya who is mother of Sachin and grandmother of Paras. Vishal is father of Heena and grandf...
Which of the following statements is true?
...Who is Grandson of O?
B has two sons and one daughter. G and J are the two married sons of B. F is the son of G. I is the daughter of C. E is married to G. C is married to J....
How is D related to W?
How is P related to S?
How is S related to T?
Who is the daughter-in-law of R?
Which of the following statements is/are definitely correct?
I. I is sister-in-law of U
II. R is daughter of A
III. S is married to M
Which of the following is definitely false?
