Question
Two trains X and Y start at the same time in the
opposite direction from two points P and Q and arrive at their destinations 100 and 81 hours respectively after their meeting each other. At what speed does the second train Y travel if the first train travels at 108 km/h.ÂSolution
Let the speed and time of two trains be s1 and s2, and t1 and t2. s1/s2 = (t2/t1)1/2 => 108/s2 = 9/10 => s2 = 120 km/hr.
- Five boxes M, N, O, P, Q are kept one above the other but not in the same order). Only one box is kept between the box O and N. Box M is kept just above th...
Which of the following statements is/are true according to the given information?Â
Which of the following combinations is/are false?
A's marks were how much more than that of B?
Six friends B, C, D, E, F and G, have exam on six different days, starting from Monday and ending on Saturday, of the same week in the month. G has exa...
Seven boxes S, T, U, V, W, X and Y are kept one above another such that bottommost box is numbered as 1 while the topmost as 7. Box V is prime numbered ...
Which person plays match in March?
Which of the following book is definitely false?
L, K, J, H, G, F, D, and S live on eight different floors of the same building. The lowermost floor in the building is numbered 1, the floor above it, n...
Statements:
J > G = Y ≥ K = S; L < T = I ≤ P ≤ E = K
Conclusions:
I. G > T
II. T = G
Relevant for Exams:
