question_answer

A steel rod is cut into 3 pieces. The second piece is twice as long as the first piece while the third piece is \[20\text{ }cm\] longer than the second piece. If the shortest piece is \[2x\text{ }cm,\] find the length of the rod in metres.

A)  \[(x-5)\,m\]

B)  \[(x+5)\,m\]

C)  \[\left( \frac{x+2}{10} \right)m\]

D)  \[\left( x+\frac{1}{5} \right)m\]