A flagstaff 17.5 metre high casts a shadow of length 40.25 metre. The height of building, which casts a shadow of length 28.75 metre under similar conditions will be :	Choose the correct choice from the following options.
A) 12 metre  B) 12.5 metre  C) 13.5 metre  D) 14 metre  E) 15 metre
Less shadow, Less Height (Direct Proportion)   So, let height of building be x metre   then,   40.25:17.5::28.75:x   =&gt;x=17.5∗28.75/ 40.25   =&gt;x=12.5   Option 12.5 metre
<result>B</result>
A flagstaff 17.5 metre high casts a shadow of length 40.25 metre. The height of building, which casts a shadow of length 28.75 metre under similar conditions will be :