Let speed of boat in upstream and downstream be ‘7x’ km/h and ‘9x’ km/h respectively. 49/7x + 81/9x = 4 7/x + 9/x = 4 16 = 4x x = 4 Speed of boat in still water = (7x + 9x)/2 = 8x = 8 × 4 = 32 km/h Desired time = 128/32 = 4 hours
What is the position of O with respect to Z?
Five person A, B, C, D and E are sitting around a circular table (not necessarily in the same order). B sits immediate left of A. C is on the left side ...
Seven girls A, B, C, D, E, F and G sit in a row facing towards the north (not necessarily in the same order). D sits fifth to the right of A. D does not...
Which of the following is true?
Who is third to the right of F?
Who is sitting second to the right of V?
If G is related to B and H is related to C. In the same way, who is related to J?
Who is sitting third to the left of P?
Four of the following five are alike in a certain way based on their seating positions in the above arrangement and so from a group. Who among the follo...
If E is related to H and G is related to F in a certain way, then who among the following person is related to A?
