Asked by Anonymous

Connie, Ken and Dan took a Mathematics test. Connie scored 3 marks above their average score. Ken scored 14 marks fewer than Connie. Find the difference between Dan’s marks and Ken’s marks.

Answers

Answered by oobleck
if the average is x, then
c+k+d = 3x
c = x+3
k = c-14 = x-11
that means that
(x+3) + (x-11) + d = 3x
d = x+8
thus, d-k = (x+8)-(x-11) = 19
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