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0.28 part of a window is painted black, 0.33 part is painted red. What is the percentage of the part of the window to be painted ?
  • a)
    0.61
  • b)
    0.39
  • c)
    30.5%
  • d)
    39%
Correct answer is option 'D'. Can you explain this answer?
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0.28 part of a window is painted black, 0.33 part is painted red. What...
percent of window remaining to be painted=100%-(percent already painted)=(100-61)%=39%
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0.28 part of a window is painted black, 0.33 part is painted red. What...
Given information:
- 0.28 part of the window is painted black
- 0.33 part of the window is painted red

To find:
- The percentage of the part of the window to be painted

Solution:

Step 1: Calculate the total fraction of the window that is already painted

To calculate the total fraction of the window that is already painted, we can add the fractions that represent the black and red parts of the window:

0.28 (black) + 0.33 (red) = 0.61

Step 2: Convert the fraction to a percentage

To convert the fraction to a percentage, we can multiply it by 100:

0.61 * 100 = 61%

Step 3: Calculate the percentage of the part of the window to be painted

Since we are looking for the percentage of the part of the window to be painted, we need to subtract the percentage of the window that is already painted from 100%:

100% - 61% = 39%

Therefore, the percentage of the part of the window to be painted is 39%.

Answer: Option D) 39%
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0.28 part of a window is painted black, 0.33 part is painted red. What is the percentage of the part of the window to be painted ?a)0.61b)0.39c)30.5%d)39%Correct answer is option 'D'. Can you explain this answer?
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