Question
Length of train 'X' is (35n - 30) metres, which is 200
metres more than that of train 'Y'. Time taken by 'X' and 'Y' to cross a pole is 20 seconds and 16 seconds, respectively. Sum of speeds of both the trains is (3n + 1) m/s. Determine the time taken by 'Y' to cross a platform of length 275 metres.Solution
ATQ, Length of 'Y' = 35n - 30 - 200 = (35n - 230) metres Speed of 'X' = [(35n - 30) ÷ 20] m/s Speed of 'Y' = [(35n - 230) ÷ 16] m/s 
4 X (35n - 30) + 5 X (35n - 230) = (3n + 1) X 80 Or, 140n - 120 + 175n - 1150 = 240n + 80 Or, 75n = 1,350 Or, 'n' = 18 Length of 'Y' = 600 - 200 = 400 metres Speed of 'Y' = (400/16) = 25 m/s Required time = (400 + 275) ÷ 25 = 27 seconds
Statement: X>W=Y>N≤P; W≥Z ;Z ≥P
I. X>Z
II. W≥P
Statements:
J $ R % U % C
Conclusions:
I. R © C
II. J * U
III. C % J
In the following question the relationship between different elements is given in the statements followed by three conclusions I, II and III. Read the...
Statements: Z > X = A ≥ V > W > B; B = Y ≥ U = E > T
Conclusions:
I. Z > U
II. Y > Z
Statements: E > O, S < Z, O ≤ S
Conclusions:
I. E < S
II. O < Z
Statement: A≤T<B =C ≤P<D;D>J ≥S
I. C >S
II. J < D
Statements: M > Q ≥ U = O, S = U < R ≤ T
Conclusions :I. M < R  II. T > O   III. Q ≥ T
In the question, assume the given statements to be true. Find which of the following conclusion(s) among the three conclusions is/ are definitely true ...
Statements: M > N > P ; P = Q ; N < R
Conclusions:
I. Q < N
II. P < M
III. M > R
Statements:
S ≥ T ≤ D > P; F ≥ T > J ≥ Y
Conclusions:
I) Y < S
II) F > P
Relevant for Exams:
