Question
108 unit of work can be completed by P alone in 18 days.
P started working alone and joined by Q after 9 days such that they completed the remaining work in 3 days. Find the number of days taken by Q to complete the whole work alone.Solution
Let the efficiency of Q = x units/day Efficiency of P = (108/18) = 6 units/day According to question: 6 × 9 + (6 + x) × 3 = 108 Or, 54 + 18 + 3x = 108 Or, 3x = 108 – 72 Or, 3x = 36 Or, x = 12 Number of days taken by Q to complete the work alone = (108/12) = 9 days
In the following question the relationship between different elements is given in the statements followed by three conclusions I, II and III. Read the ...
Statement: M > N ≥ O; M ≤ P = Q; R > N
Conclusion: I. N < QÂ Â Â Â Â II. R > M
Statements:
Q ≥ J ≤ V; U > J > X; M = U < P
Conclusions:
I. P > X
II. V ≥ M
Statements: Q = R; S ≥ T; P ≤ Q; R > V; R > S; T ≥ U
Conclusions:
(i) R > U (ii) V ≥ U (iii) P = R (iv) P < R
...Statements: A > C = E > G, G > J ≥ L = N
Conclusion:
I. A > L
II. A ≥ N
Statements: R © K, K * N, N $ J, J % H
Conclusions:     I.R $ N                  II.J @ K              �...
Statements: B % L, L & Y, Y @ I, I # Q
Conclusions: I. Q & YÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â II. B # I
...Which of the following expressions will be true if the expression Q ≥ M = R > F = E ≤ X is definitely true?
Statements: J # Q, Q * D, D % P, P $ Y
Conclusions:Â Â Â Â Â Â I. Q * YÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â II. P *YÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â III...
Statement: D < M < P = V = E ≥ T > Z
Conclusion: I. P > Z II. D > E
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