Homework Help: math

Posted by Annie on Sunday, May 23, 2010 at 12:12am.

Three pieces of wood are needed for a project.
They are to be cut from a 90-cm-long piece of
wood. The longest piece is to be 3 times as long as
the middle-sized piece and the shortest piece is to
be 10 cm shorter than the middle-sized piece. Can
this be done with two cuts? If so, tell how.

math - Jen, Sunday, May 23, 2010 at 12:45am
The pieces are 10 cm, 20 cm, and 60 cm. I don't think this can be done with two cuts. I think that you woudl need three.
math - drwls, Sunday, May 23, 2010 at 7:29am
After cutting off a 60 cm piece, and 20 cm off the remaining 40 cm, you will be left with 10 cm. That is two cuts. You could also change the order.

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