Subtract 250-50 which equals 200 and then multiply it by 3 which is 600
17/2, 8 and 1/2 or 8.5 are all the correct answers.
Line segment of length k is divided into 3 equal parts.
so first segment is 0-k/3 and third segment is 2/3k-k
so mid-pt of 1st = k/6 and 3rd = 5/6k
so the distance in between = 5/6k-k/6 = 4/6k = 2/3k
The answer is 19.8 to ur problem