Question 990064
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Let x be the number of 2-bedroom houses, y be the number of 3-bedroom houses.


Then you have a system of equations, according to the condition


{{{system(-x + y = 8,
67.95*x + 82.25*y = 4413)}}}.


Solve it. For example, use the elimination method


(y = 8 + x; 

substitute it into the second equation; 

you will get the equation for y only; 

solve it; 

then make back substitution . . . )