Each row of the grocery parking lot has 10 parking spots of equal width. what is the width for each spot?
combined with of the grocery store is 31.92.

Well if you mean that the total width of all the parking spots is 31.92 then you would just divide that by 10 to get 3.192 but if you mean that it's 31.92 with the grocery store too then you need to know how wide the grocery store is too.

The answers are 20,30,80,180,960,890,1230,4560. on the first row

The answer is : 63explanation 60 times 0.05360+363