We are given three cases
Case-A: The kitchen
Let's assume install cost per-square-foot is x
The tile cost $1.73 per-square-foot plus an installation fee per-square-foot
so, the tile cost per square foot =1.73+x
The area of the kitchen is 120 square feet
so, total cost = the tile cost per square foot*area of kitchen
total cost
we have total cost =740.40
we can set equal
now, we can solve for x
so, the cost of install of kitchen per-square-foot is $4.44
Case-B: Living room
Let's assume install cost per-square-foot is x
The hardwood cost $4.98 per-square-foot plus an installation fee per-square-foot
so, the tile cost per square foot =4.98+x
The area of the living room is 200 square feet
so, total cost = the hardwood cost per square foot*area of living room
total cost
we have total cost =1688
we can set equal
now, we can solve for x
so, the cost of install of living room per-square-foot is $3.46
Case-C: Master Bedroom
Let's assume install cost per-square-foot is x
The carpet cost $2.48 per-square-foot plus an installation fee per-square-foot
so, the carpet cost per square foot =2.48+x
The area of the master bedroom is 180 square feet
so, total cost = the carpet cost per square foot*area of master bedroom
total cost
we have total cost =928.80
we can set equal
now, we can solve for x
so, the cost of install of master bedroom per-square-foot is $2.68
so, we get different installation costs as
(1) so, the cost of install of kitchen per-square-foot is $4.44
(2) the cost of install of living room per-square-foot is $3.46
(3) the cost of install of master bedroom per-square-foot is $2.68
now, we have to arrange from least to greatest
so, arrangement will be
Master bedroom , Living room , kitchen..........Answer