A map is enlarged while keeping the same shape. 
 
Map Width (Cm) Height (cm)
Original 25 20
Enlarged 65 52
 
Answer the following
 
(a) Find the ratio of width to height for each map.  i:i
 
(b) Are the two maps proportional?
 
(c) By what factor has the map been enlarged? i
 
[Note: Enter the factor in decimal upto three decimal places]