Question
'A' takes 7 times as much time as 'B' takes or 3 times
as much time as 'C' takes to finish a piece of work. Working together, they can finish the work in 21 days. 'B' can do the work alone in:Solution
Let the time taken by 'B' be '3x' days Therefore, time taken by 'A' = 7 X 3x = '21x' days Time taken by 'C' = (21x/3) = '7x' days Let total work = 21x units {LCM of '3x, '21x' and '7x'} Efficiency of 'A' = (21x/21x) = 1 unit/day Efficiency of 'B' = (21x/3x) = 7 units/day Efficiency of 'C' = (21x/7x) = 3 units/day Combined efficiency of 'A', 'B' and 'C' = (21x/21) = 'x' units/day Or, x = 1 + 7 + 3 = 11 Therefore, time taken by 'B' = 3x = 33 days
Statements:
P < Q < R < S ≤ B < H; S > N ≥ Y
Conclusions:
I) P < Y
II) R ≥ N
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 the...
Statements: P ≥ Q ≥ R = S, Q ≥ T > U ≥ V
Conclusion:
I. P ≥ V
II. P > V
Statements: J < K; L = M; K >N ≥ L
Conclusions:
I. J < L
II. N = M
Statements: M = N ≤ P = C > G, D ≥ M > T = F
Conclusion:
I. D ≥ N
II. N > F
III. F < P
Statements: A ≥ B ≥ Y = Z = M ≥ N ≤ E ≤ F = J
Conclusions:
I. F > Z
II. J ≤ Y
Which of the following expression symbols should replace the question mark(?) in the given expressions to make the expression C ≥ E as well as D > M d...
Statement: M < N; L ≥ U; L ≥ Q; U > N ≥ T
Conclusion:
I. N > Q
II. Q > T
Statements: X < H = U ≤ I < N = M, M > B ≥ V
Conclusions:
I. I > V
II. U ≥ MStatement: D > C > U < K > E > N < A
Conclusion:
I. D > N
II. D > A
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