The living room is 2 inches = 5 feet. The family wants to change it to 15 inches. If the width of the living room on the original blueprint was 6 inches and the length is 9.6 inches. What are the scale and width of the new blueprint?

Part a) The scale of the new blueprint is      

Part b) The width of the living room in the new blueprint is  

Step-by-step explanation:  

we know that  

The scale of the original blueprint is

and  

the width of the living room on the original blueprint is 6 inches

so  

Find the actual width of the living room, using proportion

9x

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1