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%.
- Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the correct order to form a meaningful and coherent paragraph.
... Choose the appropriate option to arrange the sentences in the correct order to form a meaningful paragraph.
A-Is multi –faced and plays an impo...
Which of these should be the SECOND sentence after rearrangement?
Select the most appropriate sequence from the given options to make a meaningful paragraph from jumbled sentences.
A. She was a tall woman and ...
In each of the following questions, five sentences are given in which only four sentences will make a coherent paragraph after rearrangement. Find the ...
Given below are a few sentences in which four words are emboldened each. The words may or may not be in their correct position. Rearrange the words if ...
Which of the following would be the FIRST statement after rearrangement?
Which of the following is the sixth (last) sentence of the passage?
Which of the following would be THIRD the statement after rearrangement?
1. The book was
P. that explained some
Q. of the scientific jargon
R. confusing, but it
S. contained a glossary
6. in the last few pages.
Relevant for Exams:
