Question
Ratio of speed of a boat in still water to speed of stream
is 9:1 respectively.Ratio of the time taken by the boat to cover a distance of (x + 50) km upstream and (x – 70) km in downstream is 15:11 respectively. Find the value of x.Solution
ATQ,
Let speed of boat in still water and speed of stream is ‘9a’ km/h and ‘a’ km/h respectively.
Upstream speed = 9a – a = 8a km/h
Downstream speed = 9a + a = 10a km/h
So, [(x + 50)/8a]/[(x – 70)/10a] = 15/11
Or, 11(x + 50) = 12(x – 70)
Or, 11x + 550 = 12x – 840
Or, x = 1390
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 ...
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:
P < Q < R < S ≤ B < H; S > N ≥ Y
Conclusions:
I) P < Y
II) R ≥ N
Statements: J = N, K < L, M ≥ J, N ≤ K
Conclusion:
I. N ≤ M
II. L > N
Statements: G > E < F; E = D > C; C = B < A
Conclusion:
I. B < F
II. G > A
Statement: P `>=` U > S `<=` F < Z; I `>=` F > M
Conclusion: I. P > M II. I `>=` Z
...Statements: H # I, I @ J, J $ P
Conclusions: a) H # J b) H # P
Statements:
L ≤ J ≤ C = N; W ≥ X > L
Conclusions:
I. J ≤ X
II. X ˃ W
Statements: A > B > C, C < D > E, E = F > G
Conclusion:
I. C = G
II. A > F
In the following question, a relationship between different elements is shown in the statements, followed by two conclusions I and II. Assuming the stat...
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