Posted by Nina on Sunday, November 21, 2010 at 2:30pm.
A 384-m wire is cut into three pieces. The second piece is 3 m longer than the first. The third is four-fifths as long as the first. How long is each piece?
- Math - Reiny, Sunday, November 21, 2010 at 2:33pm
first ------> x
second ----> x+3
third -----> (4/5)x
solve x + x+3 + (4/5)x = 384
I suggest multiplying each term by 5, then it becomes real easy.
- Math - Bosnian, Sunday, November 21, 2010 at 5:29pm
F-lenght of first size
S-lenght of second size
T-lenght of third size
2F+(4/5)F=381 Multiply with 5
14F=1905 Divide with 14
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