Question
Speed of a boat in still water to speed of boat in
upstream is 8: 7. If the boat can travel 450 km in downstream in 10 hours, then find the time taken by the boat to cover 34 km in still water.Solution
Let speed of boat in still water and speed of boat in upstream be ‘8x’ km/h and ‘7x’ km/h, respectively. Speed of stream = 8x – 7x = x km/h Speed of boat in downstream = 8x + x = 9x km/h So, 9x = 450/10 => x = 5 Speed of boat in still water = 8 × 5 = 40 km/h Desired time = 34/40 x 60 = 51 minutes
What is the position of P with respect to her sister?
Six persons are sitting in two straight rows, facing north. Their names are A, B, C, D, E and F. A and F are sitting at diagonally opposite ends. B is i...
Which of the following statement is not true before the final arrangement?
Which of the following statements is definitely false?
Six friends are sitting in a straight line. E is 4th from the right. E is between B and D. A is adjacent to B. D is adjacent to C. D is between E and C....
Five friends, D, E, F, G and H, are sitting in a straight line. D and E are adjacent to each other. E is between D and F. D is third to the left of G. G...
Who among the following person sits fourth to the left of G?
What is the position of F with respect to H?
Who among the following person sits opposite to H?
X has tuition centre in which place?
Relevant for Exams:
