Grid D is shaded red and blue in the ratio 1:2.
To determine which grid is shaded red and blue in the ratio 1:2, let's analyze each option:
A: This grid is not shaded red and blue in the specified ratio.
B: This grid is not shaded red and blue in the specified ratio.
C: This grid is not shaded red and blue in the specified ratio.
D: This grid is shaded red and blue in the ratio 1:2. Therefore, D is the correct option.
E: This grid is not shaded red and blue in the specified ratio.
F: This grid is not shaded red and blue in the specified ratio.
A ratio is a comparison of two or more quantities or values. It expresses how one quantity is related to another. Ratios are commonly represented in the form of a fraction, where the two numbers are separated by a colon (e.g., 1:2).
Here are some key points about ratios:
1. Simplifying ratios: Ratios can be simplified by dividing both numbers by their greatest common divisor. For example, the ratio 6:8 can be simplified to 3:4 by dividing both numbers by 2.
2. Equivalent ratios: Ratios that represent the same comparison are called equivalent ratios. For instance, the ratios 1:2, 2:4, and 3:6 are equivalent because they all represent the same comparison.
3. Using ratios to compare quantities: Ratios allow us to compare the relative sizes of different quantities. For example, if we have a ratio of 2:5, it means that for every 2 units of one quantity, there are 5 units of another quantity. This can be useful for comparing things like ingredients in a recipe or dimensions in geometry.
4. Applying ratios to solve problems: Ratios can be used to solve various types of problems, such as finding missing quantities or scaling up or down. For example, if we know the ratio of boys to girls in a class is 3:5, and we know there are 30 boys, we can find the number of girls by setting up a proportion: 3/5 = 30/x, where x represents the number of girls.