Error: they divided both sides by three. 
correct: they should’ve first subtracted both sides by two then divided both sides by three.
        
             
        
        
        
Given 
A frame is 9in wide and 6 in tall.
If it reduces to a width of 3 in
Find out the  how tall will it be .
To proof
As given in the question
A frame is 9in wide and 6 in tall.
 reduces to a width of 3 in
now as shown in the table given below
This table shows that the  width of a frame is directly proportional to the height (tall) of the frame.
let us assume that the height of the frame after reduces width to 3in be = x
than the equation becomes  

put the all the value
we get

solve the  above

x = 2in
therefore 2in tall will be the frame .
Hence proved
 
        
             
        
        
        
Well every 5 feet will be drawn an inch in the floor-plan.
And given dimensions in feet must be multiplied by 1 inch/5 feet.
The dimensions are 4 inch by 4.8 inch.
Hope this helps you! (:
        
             
        
        
        
Answer:
1/2
Step-by-step explanation:
6/12
3/6
1/2
 
        
                    
             
        
        
        
24 x 0.25
6
24+6
30
so the answer is £30