40
37 rounded to the nearest 10 is 40.
21 over 40 rounded to the nearest fourth is 0.5
The answer is $39. If the cents are 50 or over round up to $40 dollars, but because it is only 49 cents the number is closer to $39 so round down to $39.
40
If you are talking about 40 dollars, the answer is 40. It can't be 39 or 41.
40
40
40
40
40
40
40
40
40
40
The answer is $39. If the cents are 50 or over round up to $40 dollars, but because it is only 49 cents the number is closer to $39 so round down to $39.