Question
A can complete a piece of work alone in 20 days, while B
can do it alone in 30 days. They worked together for 5 days and left. The rest of the work is completed by C alone in 7 days. In what ratio should the payment be divided among them?Solution
Let the total work be 60 units (LCM of 20 and 30) ⇒ Efficiency of A = 60/20 = 3 units/day ⇒ Efficiency of B = 60/30 = 2 units/day Combined efficiency of A and B = 3 + 2 = 5 units/day Work done by A and B in 5 days = 5 × 5 = 25 units Remaining work = 60 - 25 = 35 units Efficiency of C = 35/7 = 5 units/day Ratio of work done by A : B : C = Efficiency × time done by each Ratio of work done by A : B : C = 3×5 : 2×5 : 5×7 ⇒ Ratio of work done by A : B : C = 3 : 2 : 7 ∴ The payment is divided among A, B, and C in the ratio 3 : 2 : 7.
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...
In which of the following expressions does the expression ‘L > B’ and ‘R < N’ is true?
Statements: V ≥ O ≥ S = A > J, M < Y = P ≤ O > R
Conclusion:
I. O > M
II. A ≥ M
III. V > R
Statements: A > B ≥ C ≤ D; E ≥ F ≥ G = A
Conclusion:
I. E > D
II. D ≥ E
Statements: N < G ≥ F > E ≥ D, D = O ≥ I > P
Conclusions:
I. D < G
II. N > I
III. P < E
- Statements: F > G ≥ H = I < J = K ≤ L ≤ M = N
Conclusions:
I. M > J
II. G ≥ N
III. J = M 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 t...
In the following question the relationship between different elements is given in the statements followed by three conclusions I, II and III. Read the ...
In which of these expression ‘X ≤ B’ is definitely true?
Statement: I ≤ S, S < X, X = F, F ≤ K
Conclusion: I. K > I II. I < X
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