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A designer uses marbles of four different colours of his designs. The cost of each marble is the same, irrespective of the colour. The table below shows the percentage of marbles of each colour used in the current design. The cost of each marble increased by 25%. Therefore, the designer decided to reduce equal numbers of marbles of each colour to keep the total cost unchanged. What is the percentage of blue marbles in the new design?
  • a)
    35.75
  • b)
    40.25
  • c)
    43.75
  • d)
    46.25
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A designer uses marbles of four different colours of his designs. The ...
Assume total number of marbles = 100
Blue marble = 40
Black marble = 25
Red marble = 20
Yellow marble = 15
Cost of 1 marble be Rs. 1
Cost of marbles increased = 25%
New cost of 1 marble = Rs. 1.25
Let x marbles are reduced from each type but the total cost must remain same i.e. Rs 100
Now, 
1.25[(40 − x) + (25 − x) + (20 − x) + (15 − x)] = 100
125 − 5x = 100
25 = 5x
x = 5
So, now the numbers of different marbles are
Blue marble = 35
Black marble = 20
Red marble = 15
Yellow marble = 10
% blue marbles in new design 
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A designer uses marbles of four different colours of his designs. The cost of each marble is the same, irrespective of the colour. The table below shows the percentage of marbles of each colour used in the current design. The cost of each marble increased by 25%. Therefore, the designer decided to reduce equal numbers of marbles of each colour to keep the total cost unchanged. What is the percentage of blue marbles in the new design?a)35.75b)40.25c)43.75d)46.25Correct answer is option 'C'. Can you explain this answer?
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A designer uses marbles of four different colours of his designs. The cost of each marble is the same, irrespective of the colour. The table below shows the percentage of marbles of each colour used in the current design. The cost of each marble increased by 25%. Therefore, the designer decided to reduce equal numbers of marbles of each colour to keep the total cost unchanged. What is the percentage of blue marbles in the new design?a)35.75b)40.25c)43.75d)46.25Correct answer is option 'C'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A designer uses marbles of four different colours of his designs. The cost of each marble is the same, irrespective of the colour. The table below shows the percentage of marbles of each colour used in the current design. The cost of each marble increased by 25%. Therefore, the designer decided to reduce equal numbers of marbles of each colour to keep the total cost unchanged. What is the percentage of blue marbles in the new design?a)35.75b)40.25c)43.75d)46.25Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A designer uses marbles of four different colours of his designs. The cost of each marble is the same, irrespective of the colour. The table below shows the percentage of marbles of each colour used in the current design. The cost of each marble increased by 25%. Therefore, the designer decided to reduce equal numbers of marbles of each colour to keep the total cost unchanged. What is the percentage of blue marbles in the new design?a)35.75b)40.25c)43.75d)46.25Correct answer is option 'C'. Can you explain this answer?.
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