Question
A towel was 75 cm broad and 120cm long. When bleached,
it was to have lost 40% of its length and 20% breadth. The percentage of decrease in area is:Solution
Original area = 75 × 120 = 9,000 sq cm. Reduced length = 60% of 75 cm = 45 cm Reduced breadth = 80% of 120 cm = 96 cm Reduced area = 45 × 96 = 4,320 sq cm Reduction in area = 9,000 – 4,320 = 4,680 sq m. ∴ % Reduction = 4,680/(9,000 ) × 100 = 52%. SHORTCUT ALTERNATE METHOD: LET LENGTH OF RECTANGLE = 100 AND BREADTH OF RECTANGLE = 100 SO AREA = L×B = 100×100 = 10000 SO NEW LENGTH OF RECTANGLE = 60 AND BREADTH OF RECTANGLE = 80 SO AREA = L×B = 60×80 = 4800 ∴ % Reduction = (10000-4800)/10000× 100 = 5200/10000× 100 = 52%.
Statements: Z > X = Y ≥ W; S ≥ I ≤ Q = Z
Conclusions:
I. W < Q
II. S ≥ Y
III. Y < S
Statements: R = S > Y ≥ T = W ≥ U > V > X
Conclusions:
I. Y < X
II. S > V
III. U ≤ RStatements: H > N = F ≤ P ≤ T ≥ O ≥ E
Conclusions:
I. H < P
II. F > O
III. P ≥ 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: Z > R = K ≥ X = N ≥ Q, F < B ≤ Q
Conclusions:
I. X ≥ F
II. B ≤ K
III. R > F
Statements: E > U > V ≥ K > F; E ≤ N = L < H
Conclusions: I. L > K II. U < H
Statement: A≤B ≤C>D ; E<D ;F>E
Conclusions:
I. D>A
II. E<C
Statements: K ≥ N = I ≥ H ≤ U; B = S ≤ I
Conclusion: I. B < K II. B = K
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 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...
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