Question

The length of a rectangle is 2 more than 3 times the width. If the perimeter is 100 meters, what is the width of the rectangle?

Answer 1

\[l=2+3w.......(1)\]
\[P=2(l+w)=2l+2w=100\]
\[l+w=50\]
substitute (1)
\[2+3w+w=50\]
\[4w=48\]
\[w=12\]