Question
Pipe ‘A’ can fill a tank in 30 hours whereas leak
‘A’ can empty it in 50 hours. If they both operate along with pipe ‘B’, then the given tank gets filled in 15 hours. How much time is needed to fill the given tank if pipe ‘B’ and leak ‘A’ work together?Solution
Let the capacity of the tank be 150 litres {LCM (30 and 50)} Efficiency of pipe ‘A’ = 150 ÷ 30 = 5 litres/hour Efficiency of leak ‘A’ = 150 ÷ 50 = 3 litres/hour Combined efficiency of pipe ‘A’ and leak ‘A’ = 5 – 3 = 2 litres/hour Combined efficiency of pipe ‘A’, ‘B’ and leak ‘A’ = 150 ÷ 15 = 10 units/hour Efficiency of pipe ‘B’ = 10 – 2 = 8 units/hour Time taken by pipe ‘B’ and leak ‘A’ to fill the tank = 150 ÷ (8 – 3) = 30 hours
Statements: A ≤ B = C ≥ D > E > F; F = G ≥ H = I > J > K = L
Conclusions:
I. B > F
II. H = L
Statements: B > C= D > F < G = J; H > F > I ≥ E
Conclusions:
I. C > E
II. H < G
III. J = H
Which of the following should be placed in the blank spaces respectively (in the same order from left to right) in order to complete the given expressi...
Statement: C > B > T < J > D > M < Z
Conclusion: I. C > M II. C > Z
Statements: G > I = H ≥ J ≥ L, H = M ≤ N < K
Conclusions:
I. G > M
II. N ≥ L
III. K > I
Answer the questions based on the information given below.
A @ B means A is not smaller than B
A & B means A is neither smaller than nor...
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 th...
Statements: H ≥ I > J, K > J, L = M ≥ J
Conclusions:
I. L > K
II. H > J
Statement: V > R; C > U > Q; C < R
Conclusion:
I.V > Q
II. V > U
Statements: I > E ≥ F; G < D ≤ I; J < E ≤ H
Conclusions:
I. G < E
II. H ≥ F
III. E < D
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