Mildred cut a 9 foot board into two pieces the long piece is twice as long as the short one how long is the short piece

Question

Mildred cut a 9 foot board into 2 pieces the long piece is twice as long as the short one how long is the short piece 

Answer 1

S = short piece

L = long piece

 

L = 2S 

 

S + L = 9

 

Subst L = 2S 

 

S + 2S = 9

3S = 9

 

S = 9/3 = 3 feet

L  = 2S = 2(3) = 6 feet