Problema Solution
Use the equations from part a and b of this exercise as a system of equations. Use subtitution to determine how many of each type of floor plan is available. Show all detail calculations. Use only decimal notation.
Answer provided by our tutors
First equation was x + y = 78
second equation was x = 2.25y
=> substituting the equation 2 into the first equation gives us
2.25y + y = 78
=> 3.25y = 78
=> y = 24
=> x = 78-y=78-24=54
Hence, houses on first floor = 54
Houses on second floor = 24