SOLUTION: A length of copper wire is to be cut into two pieces so that the first piece is 7 feet shorter than three times the length of the second piece. If the total length given is 29 fee
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Question 749889: A length of copper wire is to be cut into two pieces so that the first piece is 7 feet shorter than three times the length of the second piece. If the total length given is 29 feet, find the length of each piece.
Thank You Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = the length of the 1st piece
Let = the length of the 2nd piece
given:
(1)
(2)
-----------------
(1)
(2)
Add the equations
and, since
(2)
(2)
(2)
The length of the 1st piece is 20 ft
The length of the 2nd piece is 9 ft
check:
(1)
(1)
(1)
(1)
OK
