A 200-centimeter-long wire is cut into three peices. The second piece is three times as long as the first. The third piece is 2 times as long as the second. How long is each piece?

Assuming the value of the first piece is x, then the equation would be this:

x+3x+6x=200

Simplify, and you get:

10x=200

Solve for x:

x=20

So the first piece (x) was 20 cm long

The second piece (3x) was 60 cm long

The third piece (6x) was 120 cm long