Question
An inlet pipe can fill a tank in 15 minutes when
there’s no leakage. However, due to a leak in the tank, it takes 21 minutes to fill it completely. How long would the leak alone take to empty the full tank?Solution
Let the capacity of the tank = L.C.M and 15 and 21 = 105 units
Then, efficiency of the inlet pipe = 105 ÷ 15 = 7 units/minute
Combined efficiency of the inlet pipe with the leak = 105 ÷ 21 = 5 units/minute
So, efficiency of the leak = 5 - 7 = 2 units/minute (outlet)
So, time taken by the leak to empty the entire tank = 105 ÷ 2 = 52.5 minutes
In each of the questions below are given some statements followed by two conclusions. You have to take the given statements to be true even if they see...
Statements: J > M < C ≤ S < Q = K > N
ConclusionÂ
I. J ≥ S
II. N > M
In which of the following expressions will the expression ‘M ≥ N ' and ‘Q < O’ be definitely true?
Statements:Â Â Â Â Â Â T @ V % Z #Â C & B $ SÂ # E; W $ Z @ C
Conclusions :Â Â Â Â Â I. E @ ZÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â II. S # WÂ Â Â ...
Statements: I = E ≥ A; L ≥ K ≥ B ≥ M ≥ E
Conclusions:
I. B ≥ I
II. I < L
III. K ≥ A
Statements: P ≥ F < H; F > V ≥ G = M
Conclusions:
I. P > M
II. H ≤ V
III. H > P
...Statement: Q > R; O < K ≤ N; O ≥ S > R
Conclusion: I. O ≥ Q     II. R < N.
Statements: E = L ≤ G < I = H; E ≥ N < A; W ≥ P ≥ M > I
Conclusions:
I. E < W
II. A ≥ M
III. N < P
In which of the following expressions will the expression ‘S > Y’ and ‘R > Y be definitely true?
Statements: O @ G % N & A @ I % P; V $ U & Q # A
Conclusions:
I. N @ U
II. G % V
III. V # I
Relevant for Exams:
