Question

A 10-ft bar of I-beam weighs 207 lb. What is the weight of a 12-ft length?

Answer 1

Given:

`\begin{gathered} 10ft=207lb \\ 12ft=x \end{gathered}`

Cross multiplying the expression,

`\begin{gathered} 10* x=12*207 \\ 10x=2484 \\ x=(2484)/(10) \\ x=248.4lb \end{gathered}`

Therefore, the weight of 12-ft length is 248.4 lb