To answer this, the first step is to divide 6.55 by 5 6.55/5 = 1.31 1.31 is the cost of one marker Now multiply 1.31 by 4 to get the cost of 4 markers 1.31 × 4 = 5.24 4 markers are $5.24
Backtracking we see that the answer that best represents this is D.