It will round to 40. There is a trick I learned, or have been taught. 5 or more, add 1 more. 4 or less no need to stress. That means that number you’re rounding to has to have a number 5 or greater to make he number become 1 higher. If it is 4 or less you get rid of the number that is 4 or less.
ANSWER:
40. Trick: 5 or more add 1 more. 4 or less no need to stress. Hope this helped. Have a great day. A thank you and (or) brainliest is always appreciated. Goodbye!