1. Let's first understand the problem: You are asking why in a ratio problem there is a sum of 2+5 when the distance between 16 and 11 is only 5 units. 2. The key is to recognize what the numbers 2 and 5 represent. Usually, in ratio problems, these numbers represent parts of a whole or segments on a number line. 3. If 16 is 5 units away from 11, that means the segment length between 11 and 16 is 5. 4. The 2+5 likely represents the total length of a segment that includes the 5 units plus an additional 2 units on the other side, making the total length 7 units. 5. For example, if you have points at 9, 11, and 16 on a number line, the distance from 9 to 11 is 2 units, and from 11 to 16 is 5 units. The total distance from 9 to 16 is then 2+5=7 units. 6. So, the 2+5 is not just the distance between 16 and 11, but the sum of two segments that together form a larger segment. 7. This is important in ratio problems because ratios often compare parts to the whole, so you need to consider the total length (2+5) rather than just one segment (5). Final answer: The 2+5 represents the total length of two segments combined, not just the distance between 16 and 11, which is why it is used in the ratio calculation.