Motor boat covers a certain distance downstream in a river in 20 hours. It covers the same distance upstream in 30 hours. If the speed of the water is 12 km/hr, then the speed of the boat in still water is:
Let the distance be ‘D’ km According to the question, Downstream speed x + y = d/20 or d = 20 (x+y) .......... (i) Upstream speed x-y = d/30 or d = 30(x-y) ........... (ii) Comparing (i) & (ii) 20(x+y) = 30(x-y) 2(x+y) = 3(x-y) 2x + 2y = 3x - 3y x = 5y Hence, y = Speed of the current = 12 km/hour. Speed of boat, x = 5 × 12 = 60 km/hr
Statements : P > Q < R = U ≤ V = S ≤ W ≥ X > I
Conclusions :
I. Q ≥ V
II. R ≤ W
Statements: 2 < 4 = 8 ≤ 6; 4 ≥ 9 = 7 ≥ 10
Conclusions: I. 6 > 10 II. 6 = 10
Statement: A > B = E < F > H; I ≤ D < C; H > G > C
Conclusions:
I. F > I
II. I < G
III. B < G
Statements:
M < N < K ≥ R > S; Y < B < P ≤ N
Conclusions:
I). S > B
II). Y < K
...Statement: T > U = V < W > X; Y ≤ H < S; X > Z > S
Conclusions:
I. W > Y
II. Y < Z
III. U < Z
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 the...
Statements: S ≥ U < N = A; D > U ≥ C
Conclusions: I. A > D II. C < A
Statements: P # Q @ R & S @ T # W % I, K $ S @ L
Conclusions: I. Q # W II. R & L
...Statements: E > F = G; H < I = F; J > I
Conclusions: I) J > G
II) E < J
III) H > E
Statements:
E = F > Q = A > B; J < Z ≤ A
Conclusions:
I. Q > Z
II. B ˃ J