Four boxes for six dollars so then you do multiples of 4: 4, 8, 12, 16, 20, 24. Three boxes for five dollars then you do the multiples of three 3: 3, six, nine, 12, 15, 18, 21, 24. 4×6 = 24 so then you would do 6×6 which would equal $36. Then eight times5 dollars equals 40. So you would want to choose four boxes for six dollars because it would save more money and you would say four dollars