Question

If a vertical pole of length 6m casts a shadow 4m long on the ground and at the same time a tower cast a shadow 28 m long, then the height of the tower is: a)42m b)21m c)12m d)45m

Answer 1

42. because......... at the same time the shadows of two objects are in the same ratio........ i.e...   6:4= X=28

Answer 2

42  .. MAKE THE ON AND CROSS MULTIPLY IT 
IN THIS WAY
 
6/4=X/28 ==CROSS MULTIPLY IT