Question
Pipes ‘A’ and ‘B’ can fill a tank in 6 hours and
9 hours, respectively. If pipe ‘C’ is opened along with pipes ‘A’ and ‘B’, then the tank gets filled in 4 hours. Find the time taken by pipe ‘C’ to empty (5/6)th part of the same tank.Solution
Let capacity of the tank = 18 litres (lcm of 6 and 9) Efficiency of pipe ‘A’ = (18/6) = 3 litres/hour Efficiency of pipe ‘B’ = (18/9) = 2 litres/hour Efficiency of all the three pipes together = (18/4) = 4.5 litres/hour Efficiency of pipe ‘C’ = 4.5 – (3 + 2) = (-0.5) litre/hour {Negative sign shows that pipe ‘C’ is an outlet pipe} Required time taken = {(5/6) × 18)}/0.5 = 30 hours
Statement: A ≤ B; A ≤ I; B = D; I < C
Conclusion:
I. C ≤ B
II. D ≥ C
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 ...
Statements: T > S > R, L ≥ D < R, L ≤ O ≤ Z
Conclusions:
I. T > L
II. S > D
III. Z ≥ R
...Statements: A > O = I ≥ C = D > K = P, P < M = R
Conclusions:
I. C > R
II. R > K
III. P ≤ O
Statement: E < F ≤ G = H, I ≥ G ≤ J ≤ K
Conclusion: I. K > E II. H > K
Statements: L # W, W % V, V $ H, H # T
Conclusions : I. V @ T II. H & W III .V # T
...Statements: H = G ≥ F, F > A ≥ B > C, C > D > E = J
Conclusions:
I. C < H
II. A > J
III. H ≥ E
Statements: F ≥ G > H; I < J ≤ H; J > K
Conclusions:
I. F > J
II. K < G
III. H > K
Statements: N $ Q, Q @ M, M % S, S % T
Conclusions : I. S # Q II. S & Q III. M & T
...Statements: J # K # L $ T & A % B % C
Conclusions : I. A @ C II. A & C �...
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