If you have 99cent unit cost 40 number of units $39.60 total cost what %of grand total. I need to see the formula

To find the percentage of the total cost, you can use the following formula:

Percentage = (Cost / Total Cost) × 100

In this case, the unit cost is $0.99 and the number of units is 40, resulting in a total cost of $39.60.

Let's calculate the percentage of the total cost:

Cost = Unit Cost × Number of Units = $0.99 × 40 = $39.60
Total Cost = $39.60

Percentage = ($39.60 / $39.60) × 100 = 100%

Therefore, the percentage of the grand total is 100%.