If a box contains 105 crayons with specific ratios of colors, which equation represents the situation accurately?

The situation involves a box containing a total of 105 crayons, categorized into different colors that follow a specific ratio. The correct equation accurately reflects how the colors are distributed in relation to one another using a variable to represent a basic unit (r) of each color's ratio.

In the selected equation, r represents one part of the ratio. The other terms (2r and 4r) signify the quantities of the crayons in the different colors based on their proportions. This means one color has a quantity represented by r, another color has double that quantity represented by 2r, and a third color has four times that quantity represented by 4r. When all these values are summed up (r + 2r + 4r), they equal the total of 105 crayons.

Thus, the expression r + 2r + 4r = 105 clearly captures the relationship of the quantities of each color in the box, allowing you to solve for r and understand the distribution of crayons in the box effectively.