(200+300)/2 = 250
200 + 300 + 150 + 250 = 900
200
100, 150, 200, 250, 300, 350, 400, 450 . . .
-350 -300 -280 --250 -200
What comes in the middle of 200 and 300
200 + 300 + 250 = 750
250 (200+300=500%2=250)
(200+300)/2 = 250
300
200 + 300 + 150 + 250 = 900
300
200 + 300 200 + 200 + 100
250
200
It is then 300 rounded to the nearest hundred because 50 rounds up to 100
Well, sugar, 249 rounded to the nearest hundred is 200. It's not rocket science, darling. Just drop those extra digits and keep it simple.