Posted by WInswton on Monday, May 16, 2011 at 12:36am.
480mm pipe is cut into three pieces. the second piece is three times as long as the first. the third piece is four times as long as the second. how long is each piece?

Algebra  Damon, Monday, May 16, 2011 at 4:09am
x + 3x + 4*3x = 480
(1 + 3 + 12)x = 480
16 x = 480
x = 30
3x = 90
12x = 360