Question

Mike built a model of a 42 ft building using a scale of 2 cm = 3 ft. What is the height of the model?

Answer 1

Ok so important numbers 42 ft, 2cm, 3 ft and lets take height as x

if 2cm=3ft than x cm= 42 ft
2 = 3
-------
x= 42
cross multiply divide
(42)2/3
84/3
28