The sum of 2 consecutive even integers is at most 400. What are the numbers?
The largest pair of consecutive integers are 198 and 200.
If the sum of two equal even numbers is 400, the numbers will be 200+200.
Therefore the largest possible consecutive even numbers which have a sum of 400 or less are 198 and 200 which have a sum of 398.
Any pair of consecutive numbers less than these will have a sum of less than 400.