Question
A alone can complete a piece of work in 12 days and B
alone can complete it in 18 days. If they work together, in how many days will they complete the work?Solution
A’s 1-day work = 1/12 B’s 1-day work = 1/18 Together, 1-day work = 1/12 + 1/18 LCM of 12 and 18 = 36 1/12 = 3/36, 1/18 = 2/36 So together = (3 + 2)/36 = 5/36 Time to complete work = 1 ÷ (5/36) = 36/5 = 7.2 days
Statements: J @ K, K $ L, L & M, M % N
Conclusions: I. K @ MÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â II. N & J
...Which of the following symbols should be placed in the blank spaces respectively (in the same order from left to right) in order to complete the given e...
Statements: D = E ≥ G = K, O > B ≤ C = K, E ≤ I < F
Conclusions: I. K > O II. D ≥ C
...Statements: Q $ W, W % E, E @ K
Conclusions: a) Q $ K Â Â Â Â b) W @ K
In which of the following expressions will the expression ‘U < W’ be definitely true?
Statements: F > V > W ≥ L > G; F ≤ O = M < I
Conclusions: I. M > LÂ Â Â II. V < I
Statements: Q ≥ R > U; R ≤ S; U ≥ B
Conclusions: I. U < Q II. S > B
...Which of the following symbols should be placed in the blank spaces respectively (in the same order from left to right) in order to complete the given e...
Statements:
P = G > Q = C > B; J < Z ≤ C
Conclusions:
I. Q > Z
II. B ˃ J
Statements: B ≥ U > P = E ≥ X; X > K > N ≥ J
Conclusions: I. N < P   II. J ≤ X
Relevant for Exams:
