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Start learning 50% faster. Sign in nowThe distance travelled by the train in 16min 30 seconds will be equal to that travelled by sound (20 min – 16 min 30 sec) = 3 min 30 seconds The train travelled 330 × 210 meters in 16 1/2 minutes. ∴ Speed of the train per hour = (330 × 210 × 2 × 60)/(33 ×1000) = 252 km/hr ALTERNATE METHOD: Let speed of train = x m/s The distance covered by bullet with a speed of sound 330m/s in 20 minutes is equal to distance covered by train & bullet together in 16 min 30 sec So let speed of train = x m/s So 330 × 20 = (x+330) × 16 ×1/2 6600 × 2/33 = x + 330 So x + 330 = 400 Or x = 70 m/s = 70 × 18/5 kmph = 252kmph
Statements: M @ N % Z # C & B $ A # E; W $ Z @ C
Conclusions : I. E @ Z II. A # W ...
Statement: Z > F ≥ O; Z ≤ G = P; Q > F
Conclusion: I. P > O II. Q > G
Statements: Q > R ≥ L = O ≤ M > S = T ≤ N
Conclusion
I: N ≤ L
II: N > L
Statements: U > H ≥ W; S > T ≥ B; S < H; C ≤ D = U
Conclusions:
I. D > B
II. T < U
III. W ≤ D
Which among the following signs correctly fit in the blank in the same order B _ C _ D _ E _ F _ G _ H, in order to make the expressions D ≤ F and H >...
In the question, assuming the given statements to be true, find which of the conclusion (s) among given two conclusions is/are definitely true and then...
Statements: L ≤ Y = T ≤ S; S = F ≤ U; K > N = U
Conclusions:
I. K > T
II. U ≥ L
...I n 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 symbols should replace the question mark in the given statement in order to make conclusion 'L > G' as well as 'B > X' definitel...
Statements: X < M = I > G < J ≤ S; Q ≥ M = J; S > T ≥ U
Conclusions:
I. S > M
II. Q > G
III. T ≥ I
...
