Question
What is the speed of a boat in still water?
Statement I: The boat covers 18 km in 3 hours downstream. Statement II: The boat covers the same distance in 6 hours upstream. Statement III: The speed of the stream is one –third that of boat in still water.Solution
Let the speed of the boat be u and that of the stream be v. Then, speed of boat downstream = u + v And speed of boat upstream = u – v From I u + v = 18/3 = 6 km/hr ……….. (i) From II, u – v = 18/6 = 3 km/hr ……… (ii) From statement III, v = u/3 ……….(iii) From I and II, we get u = 9/2 = 4.5 km/hr. From I and III, we get u + u/3 = 6 Or 4u = 18 u = 4.5 km/hr. Hence statement I and either II or III is sufficient to answer the question.
Statements: B > C = D > H ≥ A; B ≤ D = F ≤ E < G
Conclusions:
I. H < E
II. B ≤ E
...Which of the following is true in the given expression?
 G < H ≤ I, V ≥ W = G, R ≤ I = A
In the question, relationship between some elements is shown in the statements (s). These statements are followed by two conclusions. Read the stateme...
Statements: Q ≤ B = S < U > M ≥ Z
Conclusion: I. U > Q II. S ≤ Z
...Statements: R = S ≥ T, U < Q < W = T, U = Z > V
Conclusions:
I. R > U
II. S ≥ Z
 III. V < T
Statements:
A ≤ B < C > K; C < S > T; T < U < V
Conclusions:
I). Â A < S
II).  A ≥ S
...Statement: H > G = M > S; GÂ `>=` Â T > L; MÂ `<=` Â F <Â Â U
Conclusion: Â I. F > SÂ Â Â Â Â Â Â Â Â Â Â II. T < H
...- Statements: P > Q ≥ R < S; T ≤ R > U ≥ V
Conclusions:
I. S > V
II. U < P
III. Q > T Which of the following symbols should be placed in the blank spaces respectively (in the same order from left to right) in order to complete the given e...
Statements: S > U ≥ V = X, Y < M < X, Y = T ≥ W
Conclusions:
I. S > Y
II. M ≤ U
III. W < X
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