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An artist has a canvas of length 10 inches and breadth 7 inches. He paints a green square of side 1 inch in one corner of the canvas. He then paints the two adjacent squares with blue colour. He continues to paint the entire canvas in such a way that no green square is adjacent to a blue square and vice versa. What is the ratio of number of blue squares to the number of green squares?
  • a)
    10: 7    
  • b)
    5 : 7    
  • c)
    1: 1    
  • d)
    7:10
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
An artist has a canvas of length 10 inches and breadth 7 inches. He pa...
The canvas along the length would have 5 blue and 5 green squares for each 1 inch breadth.
Hence, they would have equal number of blue and green squares, similar to a chess board but with different dimensions.
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Most Upvoted Answer
An artist has a canvas of length 10 inches and breadth 7 inches. He pa...
The canvas along the length would have 5 blue and 5 green squares for each 1 inch breadth.
Hence, they would have equal number of blue and green squares, similar to a chess board but with different dimensions.
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Community Answer
An artist has a canvas of length 10 inches and breadth 7 inches. He pa...
Given:
- Length of canvas = 10 inches
- Breadth of canvas = 7 inches

To Find:
The ratio of the number of blue squares to the number of green squares.

Solution:
To solve this problem, let's consider the following points:

1. Dimensions of the squares:
- The green square has a side length of 1 inch.
- The blue square has a side length of 2 inches.
- These squares are painted on the canvas without overlapping.

2. Placement of the squares:
- The artist starts by painting a green square in one corner of the canvas.
- The adjacent squares are painted blue, ensuring that no green square is adjacent to a blue square and vice versa.
- The artist continues this pattern until the entire canvas is painted.

3. Total number of squares:
- The total number of squares that can fit in the length of the canvas is 10/2 = 5.
- The total number of squares that can fit in the breadth of the canvas is 7/2 = 3.

4. Number of green squares:
- As the green squares have a side length of 1 inch, they can fit within the blue squares.
- Therefore, the number of green squares is equal to the total number of squares that can fit in the canvas, which is 5 * 3 = 15.

5. Number of blue squares:
- As the blue squares have a side length of 2 inches, they cover an area of 2 * 2 = 4 square inches.
- The area of the canvas is 10 * 7 = 70 square inches.
- Therefore, the number of blue squares is equal to the area of the canvas divided by the area covered by each blue square, which is 70/4 = 17.5.
- However, since we cannot have a fraction of a square, we need to round down to the nearest whole number.
- Therefore, the number of blue squares is 17.

6. Ratio of blue squares to green squares:
- The ratio of the number of blue squares to the number of green squares is 17/15.
- However, we need to simplify this ratio to its lowest terms.
- The greatest common divisor (GCD) of 17 and 15 is 1.
- Dividing both the numerator and denominator by 1, we get the simplified ratio of 17/15.

Therefore, the ratio of the number of blue squares to the number of green squares is 17:15, which is equivalent to option 'C' (1:1).
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An artist has a canvas of length 10 inches and breadth 7 inches. He paints a green square of side 1 inch in one corner of the canvas. He then paints the two adjacent squares with blue colour. He continues to paint the entire canvas in such a way that no green square is adjacent to a blue square and vice versa. What is the ratio of number of blue squares to the number of green squares?a)10: 7 b)5 : 7 c)1: 1 d)7:10Correct answer is option 'C'. Can you explain this answer?
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