Question
X, Y and E can do piece of work in 24, 30 and 40 days
respectively. All three began to work together but X and Y left 6 and 8 days respectively before completion of the work. In how many days was the work completed?Solution
X’s one day’s work = 1/24days Y’s one day’s work = 1/30days E’s one day’s work = 1/40days Then, (x - 6)/24 + (x - 8)/30 + (x)/40 = 1 (5(x-6) + 4(x-8)+3x)/120 = 1 5x – 30 + 4x – 32 + 3x = 120 12x = 120 + 62 12x = 182 x = 182/12 ∴ x = 91/6 days = 15(1/6) days
Which of the following symbols should replace the question mark (?) in the given expression in order to make the expressions ‘E ≤...
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...
Statements: S * K, T $ K, K @ B
Conclusions:
a) S $ B
b) S @ B
Statement: C < X ≤ B > E < L < I
Conclusion: I. X > LÂ Â Â Â Â Â Â Â Â Â II. B > C
Statements: Q > P > R ≥ N; L ≥ Q; O = M < N
Conclusions:
I. P > L
II. O < R
III. L > O
Statements: S > V = T, U < X < T, W > U
Conclusions:
I. W > T
II. V > U
III. S > X
Statements: G < O = H ≥ L > F < U≤ T ≥ Z
Conclusion:
I. L ≤ O
II. T > L
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...
Statements: M < N = G > P, P ≥ Z ≥ Y
Conclusions:
I. N > Y
II.G > M
Statements: B ≥ C > D ≤ E ≤ F ≤ G
Conclusions:I. D = G II. D < G
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