Speed of a boat in still water is 10 kmph and speed of stream is 7 kmph. A man rows to a place at a distance of 51 km and come back to starting point. The total time taken by him is:
Rate upstream = 10 – 7 = 3 kmph Rate downstream = 10 + 7 = 17 kmph Time taken to go upstream = 51/3 = 17 hr Time taken to go downstream = 51/17 = 3 hr Total time = 17 + 3 = 20 hrs
If R has only one child and there are four male members in the family then how is the child of R related to Y?
How is M related to H?
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If H is mother of E, who is father of B, who is sister of A, whose mother is N’s sister then how is B related to N?
Which of the following statements is definitely true?
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