Question
The speed of a boat in still water is 30 km/hr. If the
boat covers 160 km in upstream in 8 hours, then find the time taken by the boat to travel 120 km in downstream.Solution
Let the speed of the boat in still water and the speed of the current be ‘x’ km/hr and ‘y’ km/hr, respectively Upstream speed of the boat = (x – y) = 160/8 = 20 km/hr Or, 30 – y = 20 Or, y = 30 – 20 = 10 km/hr Therefore, downstream speed of the boat = 30 + 10 = 40 km/hr Required time taken = 120/40 = 3 hours
In the question, assuming the given statements to be true, find which of the conclusion (s) among given three conclusions is /are definitely true and ...
Which of the following will be definitely true if the given expression P > S ≥ U > V = T ≤ W < R = Q is definitely true?
Statements: A ≤ E, P < Q > X, E = P, Y ≥ Z = A
Conclusions:
I. Q > E
II. E < X
Statements:
M < K ≤ G ≤ Z; P = J > Z; I ≥ R > P;
Conclusions:
I. K ≤ P
II. M < R
Statements: M = N ≤ P = C > G, D ≥ M > T = F
Conclusion:
I. D ≥ N
II. N > F
III. F < P
Statements: D ≤ R < E = F, W = B > A ≥ F
Conclusions:
I. E = W
II. D < B
Statements: Â MÂ @ C, C $ X,X # J, JÂ * Â NÂ Conclusions :Â
I.        N % X
II.       J % MÂ
...In which of these expression ‘N > G’ is definitely True?
Statements: D = P > Q = X ≤ Y = M; J = X; K > Q
Conclusion: I. M > K II. M ≤ K
Statements: V ≥ W > X = Y, C > D = E ≥ V
Conclusions :I. E ≥ W
II. D ≥ Y
III. C > V