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DIRECTIONS: Choose the most appropriate answer:
Q. A towel was 50 cm broad and 100 cm long. When bleached , it was found to have lost 20% of its length and 10% of its breadth. Find the percentage of decrease in area ?
- a)32%
- b)28%
- c)33%
- d)24%.
Correct answer is option 'B'. Can you explain this answer?
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DIRECTIONS: Choose the most appropriate answer:Q. A towel was 50 cm br...
Area of towel = l×b =100 cm × 50cm = 5000 cm2 Now, length decreased by 20% and breadth decreased by 10%
l = 100 – 20% of 100 = 80cm
b = 50 – 10% of 50 = 45cm
New area = l × b = 80cm × 45cm = 3600cm2
Change in area = (5000 – 3600) cm2 = 1400 cm2
% change in area
l = 100 – 20% of 100 = 80cm
b = 50 – 10% of 50 = 45cm
New area = l × b = 80cm × 45cm = 3600cm2
Change in area = (5000 – 3600) cm2 = 1400 cm2
% change in area
Most Upvoted Answer
DIRECTIONS: Choose the most appropriate answer:Q. A towel was 50 cm br...
Given:
- Initial breadth of the towel = 50 cm
- Initial length of the towel = 100 cm
- Percentage of length lost = 20%
- Percentage of breadth lost = 10%
To Find:
- Percentage decrease in area
Solution:
Step 1: Calculate the final length and breadth after the loss of percentages.
- Loss in length = 20% of 100 cm = 20 cm
- Final length = Initial length - Loss in length = 100 cm - 20 cm = 80 cm
- Loss in breadth = 10% of 50 cm = 5 cm
- Final breadth = Initial breadth - Loss in breadth = 50 cm - 5 cm = 45 cm
Step 2: Calculate the initial area and final area.
- Initial area = Initial length x Initial breadth = 100 cm x 50 cm = 5000 cm^2
- Final area = Final length x Final breadth = 80 cm x 45 cm = 3600 cm^2
Step 3: Calculate the percentage decrease in area.
- Decrease in area = Initial area - Final area = 5000 cm^2 - 3600 cm^2 = 1400 cm^2
- Percentage decrease in area = (Decrease in area / Initial area) x 100
= (1400 cm^2 / 5000 cm^2) x 100
= 28%
Answer:
Therefore, the percentage decrease in area is 28% (Option B).
- Initial breadth of the towel = 50 cm
- Initial length of the towel = 100 cm
- Percentage of length lost = 20%
- Percentage of breadth lost = 10%
To Find:
- Percentage decrease in area
Solution:
Step 1: Calculate the final length and breadth after the loss of percentages.
- Loss in length = 20% of 100 cm = 20 cm
- Final length = Initial length - Loss in length = 100 cm - 20 cm = 80 cm
- Loss in breadth = 10% of 50 cm = 5 cm
- Final breadth = Initial breadth - Loss in breadth = 50 cm - 5 cm = 45 cm
Step 2: Calculate the initial area and final area.
- Initial area = Initial length x Initial breadth = 100 cm x 50 cm = 5000 cm^2
- Final area = Final length x Final breadth = 80 cm x 45 cm = 3600 cm^2
Step 3: Calculate the percentage decrease in area.
- Decrease in area = Initial area - Final area = 5000 cm^2 - 3600 cm^2 = 1400 cm^2
- Percentage decrease in area = (Decrease in area / Initial area) x 100
= (1400 cm^2 / 5000 cm^2) x 100
= 28%
Answer:
Therefore, the percentage decrease in area is 28% (Option B).
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DIRECTIONS: Choose the most appropriate answer:Q. A towel was 50 cm broad and 100 cm long. When bleached , it was found to have lost 20% of its length and 10% of its breadth. Find the percentage of decrease in area ?a)32%b)28%c)33%d)24%.Correct answer is option 'B'. Can you explain this answer?
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DIRECTIONS: Choose the most appropriate answer:Q. A towel was 50 cm broad and 100 cm long. When bleached , it was found to have lost 20% of its length and 10% of its breadth. Find the percentage of decrease in area ?a)32%b)28%c)33%d)24%.Correct answer is option 'B'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about DIRECTIONS: Choose the most appropriate answer:Q. A towel was 50 cm broad and 100 cm long. When bleached , it was found to have lost 20% of its length and 10% of its breadth. Find the percentage of decrease in area ?a)32%b)28%c)33%d)24%.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for DIRECTIONS: Choose the most appropriate answer:Q. A towel was 50 cm broad and 100 cm long. When bleached , it was found to have lost 20% of its length and 10% of its breadth. Find the percentage of decrease in area ?a)32%b)28%c)33%d)24%.Correct answer is option 'B'. Can you explain this answer?.
DIRECTIONS: Choose the most appropriate answer:Q. A towel was 50 cm broad and 100 cm long. When bleached , it was found to have lost 20% of its length and 10% of its breadth. Find the percentage of decrease in area ?a)32%b)28%c)33%d)24%.Correct answer is option 'B'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about DIRECTIONS: Choose the most appropriate answer:Q. A towel was 50 cm broad and 100 cm long. When bleached , it was found to have lost 20% of its length and 10% of its breadth. Find the percentage of decrease in area ?a)32%b)28%c)33%d)24%.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for DIRECTIONS: Choose the most appropriate answer:Q. A towel was 50 cm broad and 100 cm long. When bleached , it was found to have lost 20% of its length and 10% of its breadth. Find the percentage of decrease in area ?a)32%b)28%c)33%d)24%.Correct answer is option 'B'. Can you explain this answer?.
Solutions for DIRECTIONS: Choose the most appropriate answer:Q. A towel was 50 cm broad and 100 cm long. When bleached , it was found to have lost 20% of its length and 10% of its breadth. Find the percentage of decrease in area ?a)32%b)28%c)33%d)24%.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Defence.
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DIRECTIONS: Choose the most appropriate answer:Q. A towel was 50 cm broad and 100 cm long. When bleached , it was found to have lost 20% of its length and 10% of its breadth. Find the percentage of decrease in area ?a)32%b)28%c)33%d)24%.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for DIRECTIONS: Choose the most appropriate answer:Q. A towel was 50 cm broad and 100 cm long. When bleached , it was found to have lost 20% of its length and 10% of its breadth. Find the percentage of decrease in area ?a)32%b)28%c)33%d)24%.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of DIRECTIONS: Choose the most appropriate answer:Q. A towel was 50 cm broad and 100 cm long. When bleached , it was found to have lost 20% of its length and 10% of its breadth. Find the percentage of decrease in area ?a)32%b)28%c)33%d)24%.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
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