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Let, the monthly income of A = 11x The monthly income of B = 13x The monthly expenditures of A = 9y The monthly expenditures of B = 11y So, 11x - 9y = 4000 .....(1) 13x - 11y = 4000 .....(2) (1) × 11 - (2) × 9 gives, 121x - 99y - 117x + 99y = 44000 - 36000 ⇒ 4x = 8000 ⇒ x = 8000/4 = 2000 ∴ A's income = 11 × 2000 = Rs. 22000 ∴ B's income = 13 × 2000 = Rs. 26000 The difference of income = 26000 - 22000 = Rs. 4000 Alternate method 
The difference = 2 ratio = Rs. 4000 Their income difference = 13 - 11 = 2 ratio ∴ Income difference = Rs. 4000 ∴ The difference between A and B's incomes (in Rs.) is Rs. 4000
Statements:
P ≥ Q = R; S = T ≤ U ≥ P
Conclusion:
I. R < S
II. T ≤ Q
Which among the following signs correctly fit in the blank in the same order B _ C _ D _ E _ F _ G _ H, in order to make the expressions D ≤ F and H >...
Statement: C < X ≤ B > E < L < I
Conclusion: I. X > L II. B > C
Which of the following symbols should replace the question mark (?) in the given expression in order to make the expressions B ≤ D as well as F > B de...
Statements:
E = F > Q = A > B; J < Z ≤ A
Conclusions:
I. Q > Z
II. B ˃ J
Statements: G < O = H ≥ L > F < U≤ T ≥ Z
Conclusion:
I. L ≤ O
II. T > L
Statements: D ≥ E < F = G; M < E = N ≥ O
Conclusions: I. G > M II. N < G
Statements: A < B ≤ C > E; F = I ≤ B > G; J > K = G < D
Conclusions:
I. C ≥ F
II. E < I
III. D > C
Statements: P ≥ Q > S< T > R = U
Conclusions: I. P < S
II. U = S
Statements:
P > Q < R; T ≤ U ≤ Q > S; V ≤ W < T
Conclusions:
I). P > V
II). T = S
III). R > V...
