



 
Hi Vijay, I would use meters for all the lengths measurements so express the girl's height in meters. Here is my diagram, not to scale. $A$ is the lamp, $h$ is the lamp height in meters, $g$ is the girl's height in meters and $s$ is the length of her shadow in meters. I assume the girls starts running at $B,$ the base of the lamp. She runs at 2 meters per second for 5 seconds and ends at $D.$ What is $d,$ the distance from $B$ to $D?$ Triangles $ABC$ and $EDC$ are similar. Can you complete the problem now? Penny  


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