In a box of marbles, there are three less white marbles than the red ones and five more white marbles than the green ones. If there are a total of 10 white marbles, how many marbles are there in the box?

Let's break this down simply. The question gives us a fixed starting point, which makes it easy.\n1. We are told there are 10 white marbles. So, White = 10.\n2. The first statement says there are 'three less white marbles than the red ones'. This means there are more red marbles. How many more? Three. So, the number of red marbles is 10 + 3 = 13.\n3. The second statement says there are 'five more white marbles than the green ones'. This means there are fewer green marbles. How many fewer? Five. So, the number of green marbles is 10 - 5 = 5.\n4. The question asks for the total number of marbles in the box. This is a simple addition, a skill tested in many CSAT questions [55].\n5. Total = (White Marbles) + (Red Marbles) + (Green Marbles) = 10 + 13 + 5 = 28.\n6. Looking at the options, (B) is 28. This is our answer.