Question
βAβ alone can complete a work in 45 days while
βAβ and βBβ together can complete the same work in 35 days. How much percentage of the work, βBβ alone can complete in 63 days?Solution
Let the total work = L.C.M of 45 and 35 = 315 units Then, efficiency of βAβ alone = 315 Γ· 45 = 7 units/day Combined efficiency of βAβ and βBβ = 315 Γ· 35 = 9 units/day So, efficiency of βBβ = 9 β 7 = 2 units/day So, work done by βBβ alone in 63 days = 2 Γ 63 = 126 units So, percentage of work completed by βBβ = (126 Γ· 315) Γ 100 = 40%
If the expression E < B > D = G ≥ H is definitely true, which of the following would be definitely true?
Statements: K ≥ L, N = R, L ≥ R, Q > C = K
Conclusions: I. R ≤ Q II. C ≥ N
Which of the following expressions will be true if the given expression β²S > T β₯ U < V < Wβ² is definitely true?
Statements:
E β₯ H > O < R > U = X
Conclusions:
I. E < O
II. X = O
Statement: E < N < Q = W = F ≥ U > A
Conclusion:
I. Q > A
II. E > F
What should come in the place of question mark, in the given expressions to make βM < Jβ always true?
M = N β€ O = P ? K= J
Statements: Q ≤ B = S < U > M ≥ Z
Conclusion: I. U > Q II. S ≤ Z
...Which of the following expression symbols should replace the question mark(?) in the given expressions to make the expression C β₯ E as well as D > M d...
Statements: M > N > P ; P = Q ; N < R
Conclusions:
I. Q < N
II. P < M
III. M > R
Statements: A > B β€ D; G < C β€ B; F < C β€ E
Conclusions:
I. F < D
II. E β€ B
III. A > G